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Sajiki AF, Kataoka K, Takeuchi J, Ota H, Nakano Y, Horiguchi E, Kaneko H, Terasaki H, Ito Y, Nishiguchi KM. Clinical utility of swept-source optical coherence tomography angiography for the diagnosis of exudative maculopathy. Jpn J Ophthalmol 2024:10.1007/s10384-024-01115-w. [PMID: 39215883 DOI: 10.1007/s10384-024-01115-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 07/25/2024] [Indexed: 09/04/2024]
Abstract
PURPOSE To assess the feasibility of swept-source optical coherence tomography angiography (SS-OCTA) to differentiate macular diseases, including nonpolypoidal macular neovascularization (MNV), polypoidal choroidal vasculopathy (PCV), type 3 MNV, and chronic central serous chorioretinopathy (CSC) without indocyanine green angiography (ICGA). STUDY DESIGN Retrospective observational study. METHODS This study examined 63 eyes of 63 patients with treatment-naive neovascular age-related macular degeneration (AMD), including 23 eyes with nonpolypoidal MNV, 17 eyes with PCV, and 1 eye with type 3 MNV and 22 eyes with chronic CSC. Two independent retina specialists, blinded to the clinical diagnosis, assessed each case of neovascular AMD and chronic CSC using only B-scan and en face images of SS-OCTA without referring to other examination outcomes. RESULTS By SS-OCTA alone, 19 eyes were diagnosed with nonpolypoidal MNV, 17 eyes with PCV, 2 eyes with type 3 MNV, and 22 eyes with chronic CSC, indicating high sensitivity (82.6%, 94.1%, 100%, and 100%, respectively) and specificity (100%, 97.8%, 98.4%, and 100%, respectively); however, three eyes could not be diagnosed because of obscure images. The agreement of diagnosis with SS-OCTA alone was high between the two specialists (κ = 0.82). CONCLUSION SS-OCTA showed high sensitivity and specificity in the differentiation of nonpolypoidal MNV, PCV, type 3 MNV, and chronic CSC. The differential criteria based on SS-OCTA could be a substitute for the ICGA-based diagnoses.
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Affiliation(s)
- Ai Fujita Sajiki
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Keiko Kataoka
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitakashi, Tokyo, Japan.
| | - Jun Takeuchi
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitakashi, Tokyo, Japan
| | - Hikaru Ota
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuyako Nakano
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Etsuyo Horiguchi
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroki Kaneko
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroko Terasaki
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuki Ito
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Ophthalmology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Koji M Nishiguchi
- Department of Ophthalmology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Faatz H, Lommatzsch A. Overview of the Use of Optical Coherence Tomography Angiography in Neovascular Age-Related Macular Degeneration. J Clin Med 2024; 13:5042. [PMID: 39274255 PMCID: PMC11396513 DOI: 10.3390/jcm13175042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 08/19/2024] [Accepted: 08/22/2024] [Indexed: 09/16/2024] Open
Abstract
The aim of this review is to present and discuss the use of optical coherence tomography angiography (OCTA) in age-related macular degeneration (AMD). OCTA is a non-invasive imaging procedure that gives a detailed indirect view of physiological and pathological vessels in the retina and choroid membrane. Compared with dye-based imaging, OCTA provides a segmented presentation of the individual vascular layers and plexuses, thus enabling previously unattainable differentiation and classification of pathological vascular changes within or underneath the retina. In particular, OCTA facilitates early detection of exudative macular neovascularizations (MNV) so that treatment with anti-VEGF medication can be initiated. Moreover, in the context of both screening and therapy monitoring, it is hoped that OCTA can provide more detailed data to enable greater personalization of treatment and follow-up. The image quality of OCTA is, however, susceptible to artifacts, and validation of the results by studies is required. Recent developments have shown constant improvement both in the algorithms for image calculation and avoidance of artifacts and in image quality, so the scope of OCTA will certainly expand with time.
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Affiliation(s)
- Henrik Faatz
- Eye Center, St. Franziskus Hospital Münster, 48145 Münster, Germany
- Achim Wessing Institute for Imaging in Ophthalmology, University of Essen-Duisburg, 45147 Essen, Germany
- Department of Ophthalmology, University of Essen-Duisburg, 45147 Essen, Germany
| | - Albrecht Lommatzsch
- Eye Center, St. Franziskus Hospital Münster, 48145 Münster, Germany
- Achim Wessing Institute for Imaging in Ophthalmology, University of Essen-Duisburg, 45147 Essen, Germany
- Department of Ophthalmology, University of Essen-Duisburg, 45147 Essen, Germany
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3
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Ramakrishnan MS, Kovach JL, Wykoff CC, Berrocal AM, Modi YS. American Society of Retina Specialists Clinical Practice Guidelines on Multimodal Imaging for Retinal Disease. JOURNAL OF VITREORETINAL DISEASES 2024; 8:234-246. [PMID: 38770073 PMCID: PMC11102716 DOI: 10.1177/24741264241237012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Purpose: Advancements in retinal imaging have augmented our understanding of the pathology and structure-function relationships of retinal disease. No single diagnostic test is sufficient; rather, diagnostic and management strategies increasingly involve the synthesis of multiple imaging modalities. Methods: This literature review and editorial offer practical clinical guidelines for how the retina specialist can use multimodal imaging to manage retinal conditions. Results: Various imaging modalities offer information on different aspects of retinal structure and function. For example, optical coherence tomography (OCT) and B-scan ultrasonography can provide insights into the microstructural anatomy; fluorescein angiography (FA), indocyanine green angiography (ICGA), and OCT angiography (OCTA) can reveal vascular integrity and perfusion status; and near-infrared reflectance and fundus autofluorescence (FAF) can characterize molecular components within tissues. Managing retinal vascular diseases often includes fundus photography, OCT, OCTA, and FA to evaluate for macular edema, retinal ischemia, and the secondary complications of neovascularization (NV). OCT and FAF play a key role in diagnosing and treating maculopathies. FA, OCTA, and ICGA can help identify macular NV, posterior uveitis, and choroidal venous insufficiency, which guides treatment strategies. Finally, OCT and B-scan ultrasonography can help with preoperative planning and prognostication in vitreoretinal surgical conditions. Conclusions: Today, the retina specialist has access to numerous retinal imaging modalities that can augment the clinical examination to help diagnose and manage retinal conditions. Understanding the capabilities and limitations of each modality is critical to maximizing its clinical utility.
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Affiliation(s)
- Meera S. Ramakrishnan
- Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University Irving Medical Center, New York, NY, USA
- Department of Ophthalmology, New York University Langone Medical Center, New York, NY, USA
| | - Jaclyn L. Kovach
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Charlie C. Wykoff
- Retina Consultants of Houston, Blanton Eye Institute, Houston Methodist Hospital, Weill Cornell Medical College, Houston, TX, USA
| | - Audina M. Berrocal
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Yasha S. Modi
- Department of Ophthalmology, New York University Langone Medical Center, New York, NY, USA
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Sacconi R, Sarraf D, Sadda SR, Freund KB, Servillo A, Fogel Levin MM, Costanzo E, Corradetti G, Cabral D, Zur D, Trivizki O, Parravano M, Bandello F, Loewenstein A, Querques G. Nascent Geographic Atrophy as a Predictor of Type 3 Macular Neovascularization Development. Ophthalmol Retina 2023:S2468-6530(23)00038-6. [PMID: 36736896 DOI: 10.1016/j.oret.2023.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/24/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023]
Abstract
PURPOSE To investigate the association of nascent geographic atrophy (GA) preceding the development of exudative type 3 macular neovascularization (MNV) in patients with age-related macular degeneration (AMD). DESIGN Retrospective longitudinal study. PARTICIPANTS Patients with AMD diagnosed with treatment-naive exudative type 3 MNV in 1 or both eyes were evaluated. Inclusion criteria included serial tracked structural OCT examinations for ≥ 2 years before the detection of exudative type 3 MNV. METHODS Clinical characteristics and retinal imaging, including structural OCT at baseline and at each follow-up examination, were analyzed. Eyes showing the presence of nascent GA during the follow-up were selected for analysis of prevalence, and clinical characteristics at the site of subsequent type 3 MNV development. MAIN OUTCOME MEASURES Description of the prevalence and clinical characteristics of nascent GA at the site of subsequent type 3 MNV development. RESULTS Overall, 97 eyes affected by type 3 MNV meeting inclusion criteria were analyzed. Of 97 eyes (71 patients), 22 eyes of 21 patients (mean age 82 ± 9 years) showed nascent GA preceding exudative type 3 MNV. The observed prevalence of nascent GA preceding exudative type 3 MNV was 22.7% (95% confidence interval, 14.4%-31.0%). Exudative type 3 MNV developed a mean of 9 ± 6 months after detection of nascent GA. The presence of reticular pseudodrusen in the study eye did not significantly influence the timing of exudative type 3 MNV development after the observation of nascent GA (P > 0.1 in all analyses). Reduced best-corrected visual acuity was recorded at the exudative type 3 stage in comparison with the nascent GA stage (P = 0.003). CONCLUSIONS As nascent GA may precede the development of exudative type 3 MNV, the detection of nascent GA in eyes with AMD may warrant closer surveillance to identify early exudative type 3 MNV warranting treatment. FINANCIAL DISCLOSURE(S) Proprietary or commercial disclosure may be found after the references.
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Affiliation(s)
- Riccardo Sacconi
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Division of head and neck, Ophthalmology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - David Sarraf
- Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, University of California, Los Angeles, California; Greater Los Angeles VA Healthcare Center, Los Angeles, California, United States
| | - SriniVas R Sadda
- Doheny Eye Institute, Los Angeles, California; Department of Ophthalmology, University of California-Los Angeles, Los Angeles, California
| | - K Bailey Freund
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, NYU Grossman School of Medicine, New York, New York
| | - Andrea Servillo
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Division of head and neck, Ophthalmology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Meira Miri Fogel Levin
- Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, University of California, Los Angeles, California; Greater Los Angeles VA Healthcare Center, Los Angeles, California, United States
| | | | - Giulia Corradetti
- Doheny Eye Institute, Los Angeles, California; Department of Ophthalmology, University of California-Los Angeles, Los Angeles, California
| | - Diogo Cabral
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, NYU Grossman School of Medicine, New York, New York
| | - Dinah Zur
- Division of Ophthalmology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Omer Trivizki
- Division of Ophthalmology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Francesco Bandello
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Division of head and neck, Ophthalmology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Anat Loewenstein
- Division of Ophthalmology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Giuseppe Querques
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Division of head and neck, Ophthalmology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.
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Cabral D, Ramtohul P, Fradinho AC, Freund KB. Volume Rendering of Deep Retinal Age-Related Microvascular Anomalies. Ophthalmol Retina 2022; 6:1185-1193. [PMID: 35772694 DOI: 10.1016/j.oret.2022.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/09/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE To characterize and distinguish non-neovascular deep retinal age-related microvascular anomalies (DRAMA) from type 3 macular neovascularization (MNV) using volume rendering of OCT and OCT angiography (OCTA). DESIGN Retrospective, consecutive case series. SUBJECTS Consecutive patients with age-related macular degeneration (AMD) exhibiting de novo non-neovascular abnormalities within the deep vascular plexus (DCP), as detected using high-resolution (High-Res) spectral-domain (SD) and swept-source (SS) OCT or OCTA. Patients with retinal vascular alterations attributable to other disease entities were excluded. METHODS Complete ophthalmic examination and multimodal imaging, including confocal fundus photography (CFP), SD-OCT, High-Res SD-OCT and OCTA, and volume-averaged SS-OCTA. The volume renderings of High-Res OCTA and averaged SS-OCTA were used to analyze capillary abnormalities and inflow or outflow connectivity pathways. MAIN OUTCOME MEASURES The primary outcomes were the characteristics of capillary abnormalities (number, size, shape, reflectivity, and location) and inflow or outflow connectivity pathways. The secondary outcomes were nearby changes in CFP and structural OCT (hyperreflective foci [HRF], outer retinal atrophy, and retinal pigment epithelium [RPE] atrophy). RESULTS From 8 eyes of 8 patients, 2 subtypes of DRAMA were identified: small-diameter perifoveal capillary dilations with hyperreflective walls within the inner nuclear layer (type 1, n = 4) and vascular outpouchings, typically multiple, extending posteriorly into the Henle fiber layer, with reflectivity similar to adjacent normal retinal capillaries (type 2, n = 10). Four eyes had both subtypes of DRAMA. The 3-dimensional visualization of OCTA data demonstrated DRAMA corresponding to the dilations of DCP capillaries without direct inflow or outflow connections to the superficial plexus. Fundus photographs showed circular red dots in 3 eyes, all corresponding to type 1 DRAMA. In all the cases, DRAMA colocalized with HRF. No lesions were found anterior to the areas of the RPE or outer retina atrophy. Asymptomatic intraretinal exudation varied through a follow-up duration of up to 6 years, with no lesions progressing to type 3 MNV. CONCLUSIONS In eyes with non-neovascular AMD, DRAMA include 2 types of capillary dilations occurring without the remodeling of the surrounding vascular network. Deep retinal age-related microvascular anomalies can resemble microvascular changes due to other causes and can masquerade as type 3 MNV. Mild intraretinal exudation can vary during follow-up, without progression to type 3 MNV.
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Affiliation(s)
- Diogo Cabral
- Vitreous Retina Macula Consultants of New York, New York, New York; Nova Medical School Research, Nova Medical School, Universidade Nova de Lisboa, Lisbon, Portugal; Department of Ophthalmology, New York University Grossman School of Medicine, New York, New York
| | - Prithvi Ramtohul
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, New York University Grossman School of Medicine, New York, New York
| | - Ana C Fradinho
- Nova Medical School Research, Nova Medical School, Universidade Nova de Lisboa, Lisbon, Portugal
| | - K Bailey Freund
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, New York University Grossman School of Medicine, New York, New York.
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Early OCTA Changes of Type 3 Macular Neovascularization Following Brolucizumab Intravitreal Injections. Medicina (B Aires) 2022; 58:medicina58091180. [PMID: 36143855 PMCID: PMC9506440 DOI: 10.3390/medicina58091180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/17/2022] [Accepted: 08/27/2022] [Indexed: 11/17/2022] Open
Abstract
Background and Objectives: Brolucizumab is a novel anti-vascular endothelial growth factor (VEGF), whose efficacy has been shown in the Hawk and Harrier phase 3 clinical studies. The goal of the present case series is to report initial results of brolucizumab intravitreal injections (IVI) on type 3 neovascularization in neovascular age-related macular degeneration (nAMD), evaluated by optical coherence tomography angiography (OCTA). Materials and Methods: This is a bicentric retrospective case series. Patients with newly diagnosed type 3 MNV treated with brolucizumab IVI and at least 6 months follow-up were enrolled. OCTA en face images and B-scans were analyzed for lesions at baseline, 1 month, 3 months, and 6 months. Whenever detectable, lesion area on outer retina and choriocapillaris layers was measured. Results: Twelve eyes of 12 patients were included into the study. The most consistent OCTA sign at baseline was the presence of a vascular tuft in the outer retina (100%). The highest response was achieved at 3 months, with statistically significant decrease in lesion detection in the outer retina, in the choriocapillaris, and outer retinal lesion size. At 6 months, 58% of outer retinal lesions had disappeared. Conclusions: Brolucizumab IVI shows a good short-term efficacy for the treatment of type 3 neovascularizations. Further studies with greater number of patients and longer follow-up are warranted to confirm these findings.
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Kałużny JJ, Zabel P, Danek B, Jaworski D, Makowski J. Intraretinal Cysts as a Manifestation of Retinal Angiomatous Proliferation in Optical Coherence Tomography Angiography. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58050676. [PMID: 35630094 PMCID: PMC9145726 DOI: 10.3390/medicina58050676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/12/2022] [Accepted: 05/17/2022] [Indexed: 11/16/2022]
Abstract
Background and Objectives: Intraretinal cysts are common pathology observed inspectral domain optical coherence tomography (SDOCT) in patients with neovascular form of age-related macular degeneration (AMD). The aim of the study was to determine if the presence of intraretinal cysts is positively correlated with diagnosis of retinal angiomatous proliferation (RAP) in optical coherence tomography angiography (OCTA). Material and Methods: A total of 21 eyes with intraretinal cysts in SDOCT exam (Group1) and 21 eyes with subretinal fluid(Group 2) were enrolled into the study. In each eye, the presence of intraretinal neovascularization (IRN) and chorioretinal anastomosis (CRA) was evaluated in OCTA by two experienced graders. Results: IRN was observed in 20 eyes (95.2%) from Group 1 and 5 eyes (23.8%) from Group 2. Features of CRA were found in 18 eyes (80.95%) and 16 eyes (76.2%) respectively for Group 1 and 2. Patients with cysts are 50 (95% CI: 5.43−460.52) times more likely to have IRN (p < 0.001). Conclusions: The presence of intraretinal cysts on SDOCT retinal sections in eyes with neovascular AMD corresponds to the presence of IRN on OCTA examination. The results indicate that the absence of a cyst does not exclude the presence of IRN and CRA which can be identified on OCTA.
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Affiliation(s)
- Jakub J. Kałużny
- Department of Sensory Organ Studies, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland; (J.J.K.); (P.Z.); (B.D.)
- Oftalmika Eye Hospital, 85-631 Bydgoszcz, Poland;
| | - Przemysław Zabel
- Department of Sensory Organ Studies, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland; (J.J.K.); (P.Z.); (B.D.)
- Oftalmika Eye Hospital, 85-631 Bydgoszcz, Poland;
| | - Beata Danek
- Department of Sensory Organ Studies, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland; (J.J.K.); (P.Z.); (B.D.)
- Oftalmika Eye Hospital, 85-631 Bydgoszcz, Poland;
| | - Damian Jaworski
- Oftalmika Eye Hospital, 85-631 Bydgoszcz, Poland;
- Division of Ophthalmology and Optometry, Department of Ophthalmology, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, Poland
- Correspondence:
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8
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Significance of Hyperreflective Foci as an Optical Coherence Tomography Biomarker in Retinal Diseases: Characterization and Clinical Implications. J Ophthalmol 2021; 2021:6096017. [PMID: 34956669 PMCID: PMC8709761 DOI: 10.1155/2021/6096017] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 11/30/2021] [Indexed: 02/03/2023] Open
Abstract
Hyperreflective foci (HRF) is a term coined to depict hyperreflective dots or roundish lesions within retinal layers visualized through optical coherence tomography (OCT). Histopathological correlates of HRF are not univocal, spacing from migrating retinal pigment epithelium cells, lipid-laden macrophages, microglial cells, and extravasated proteinaceous or lipid material. Despite this, HRF can be considered OCT biomarkers for disease progression, treatment response, and prognosis in several retinal diseases, including diabetic macular edema, age-related macular degeneration (AMD), retinal vascular occlusions, and inherited retinal dystrophies. The structural features and topographic location of HRF guide the interpretation of their significance in different pathological conditions. The presence of HRF less than 30 μm with reflectivity comparable to the retinal nerve fiber layer in the absence of posterior shadowing in diabetic macular edema indicates an inflammatory phenotype with a better response to steroidal treatment. In AMD, HRF overlying drusen are associated with the development of macular neovascularization, while parafoveal drusen and HRF predispose to macular atrophy. Thus, HRF can be considered a key biomarker in several common retinal diseases. Their recognition and critical interpretation via multimodal imaging are vital to support clinical strategies and management.
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Luo M, Li Y, Zhuo Y. Advances and Current Clinical Applications of Anterior Segment Optical Coherence Tomography Angiography. Front Med (Lausanne) 2021; 8:721442. [PMID: 34888319 PMCID: PMC8649770 DOI: 10.3389/fmed.2021.721442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 11/01/2021] [Indexed: 12/04/2022] Open
Abstract
Optical coherence tomography angiography (OCTA) is the most relevant evolution based on optical coherence tomography (OCT). OCTA can present ocular vasculature, show detailed morphology for assessment, and quantify vessel parameters without intravenous dye agent. Research on the anterior segment OCTA (AS-OCTA) is only in its initial phase, and its advances in clinical diagnosis and treatment efficacy evaluations require a detailed comparison to traditional imaging methods. In this review of AS-OCTA, we summarize its technical features, imaging advances, current clinical applications in various eye diseases, as well as its limitations and potential future directions. AS-OCTA offers potential advantages in ophthalmic imaging, and with further development it could become a common tool in the near future.
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Affiliation(s)
- Man Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Yiqing Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Yehong Zhuo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
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10
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Qiang W, Wei R, Chen Y, Chen D. Clinical Pathological Features and Current Animal Models of Type 3 Macular Neovascularization. Front Neurosci 2021; 15:734860. [PMID: 34512255 PMCID: PMC8427186 DOI: 10.3389/fnins.2021.734860] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/29/2021] [Indexed: 02/05/2023] Open
Abstract
Type 3 macular neovascularization (MNV3), or retinal angiomatous proliferation (RAP), is a distinct type of neovascular age-related macular degeneration (AMD), which is a leading cause of vision loss in older persons. During the past decade, systematic investigation into the clinical, multimodal imaging, and histopathological features and therapeutic outcomes has provided important new insight into this disease. These studies favor the retinal origin of MNV3 and suggest the involvement of retinal hypoxia, inflammation, von Hippel–Lindau (VHL)–hypoxia-inducible factor (HIF)–vascular endothelial growth factor (VEGF) pathway, and multiple cell types in the development and progression of MNV3. Several mouse models, including the recently built Rb/p107/Vhl triple knockout mouse model by our group, have induced many of the histological features of MNV3 and provided much insight into the underlying pathological mechanisms. These models have revealed the roles of retinal hypoxia, inflammation, lipid metabolism, VHL/HIF pathway, and retinoblastoma tumor suppressor (Rb)–E2F cell cycle pathway in the development of MNV3. This article will summarize the clinical, multimodal imaging, and pathological features of MNV3 and the diversity of animal models that exist for MNV3, as well as their strengths and limitations.
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Affiliation(s)
- Wei Qiang
- Research Laboratory of Ophthalmology and Vision Sciences, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Ran Wei
- Research Laboratory of Ophthalmology and Vision Sciences, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Yongjiang Chen
- The School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
| | - Danian Chen
- Research Laboratory of Ophthalmology and Vision Sciences, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
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11
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Kwak JH, Park WK, Kim RY, Kim M, Park YG, Park YH. Unaffected fellow eye neovascularization in patients with type 3 neovascularization: Incidence and risk factors. PLoS One 2021; 16:e0254186. [PMID: 34280215 PMCID: PMC8289018 DOI: 10.1371/journal.pone.0254186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/21/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose To evaluate the incidence and risk factors of neovascularization in unaffected fellow eyes of patients diagnosed with type 3 neovascularization in Korea. Methods This retrospective study included 93 unaffected fellow eyes of 93 patients diagnosed with type 3 neovascularization. For initial type 3 neovascularization diagnosis, optical coherence tomography and angiography were conducted. These baseline data were compared between patients with and without neovascularization in their fellow eyes during the follow-up period. Results The mean follow-up period was 66.1±31.1 months. Neovascularization developed in 49 (52.8%) fellow eyes after a mean period of 29.5±19.6 months. In the fellow eye neovascularization group, the incidence of soft drusen and reticular pseudodrusen was significantly higher than that in the non-neovascularization group (83.7% vs. 36.5%, p<0.001; 67.3% vs. 40.9%, p = 0.017, respectively), but the choroidal vascularity index (CVI) showed a significantly lower value (60.7±2.0% vs. 61.7±2.5%; p = 0.047). The presence of reticular pseudodrusen was related with the duration from baseline to development of fellow eye neovascularization (p = 0.038). Conclusion Neovascularization developed in 52.8% of unaffected fellow eyes. The presence of soft drusen, reticular pseudodrusen, and lower CVI values can be considered risk factors of neovascularization in unaffected fellow eyes of patients with type 3 neovascularization. The lower CVI values suggest that choroidal ischemic change may affect the development of choroidal neovascularization in these patients.
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Affiliation(s)
- Jae Hyuck Kwak
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Woo Kyung Park
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Rae Young Kim
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Mirinae Kim
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young-Gun Park
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young-Hoon Park
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
- * E-mail:
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Borrelli E, Mastropasqua L, Souied E, Sadda S, Vella G, Toto L, Miere A, Corradetti G, Sacconi R, Ferro G, Sarraf D, Querques L, Mastropasqua R, Bandello F, Querques G. Longitudinal assessment of type 3 macular neovascularization using three-dimensional volume-rendering OCTA. CANADIAN JOURNAL OF OPHTHALMOLOGY 2021; 57:228-235. [PMID: 34058145 DOI: 10.1016/j.jcjo.2021.04.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To investigate the evolution of treatment-naive type 3 macular neovascularization (MNV) undergoing anti-vascular endothelial growth factor (VEGF) treatment through volume rendered three-dimensional (3D) optical coherence tomography angiography (OCTA). DESIGN Retrospective observational study. PARTICIPANTS Patients with type 3 MNV and age-related macular degeneration (AMD). METHODS Included subjects had three loading injections of an anti-VEGF agent. The OCTA volume data at baseline and follow-up were processed with a previously published algorithm in order to obtain a volume-rendered representation of type 3 MNV. Progressive changes in type 3 lesions were analyzed via 3D OCTA volume rendering. RESULTS A total of 14 treatment-naive eyes with type 3 MNV from 11 AMD patients (7 females) were included. At both baseline and follow-up visits, a type 3 MNV complex was identifiable. Each complex was composed of a mean number of 2.5 ± 0.7 vascular branches at baseline and 1.4 ± 0.6 at the follow-up visit (p < 0.0001). The mean changes in central macular thickness and visual acuity were significantly correlated with modifications in the number of type 3 MNV branches (ρ = -0.533, p = 0.049, and ρ = -0.581, and p = 0.040, respectively). CONCLUSIONS This study demonstrated that type 3 lesions do not disappear completely after loading treatment, as indicated previously by histopathologic studies. Importantly, quantitative volume changes in type 3 lesions are directly associated with treatment response.
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Affiliation(s)
- Enrico Borrelli
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy
| | - Leonardo Mastropasqua
- Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy
| | - Eric Souied
- Department of Ophthalmology, University of Paris XII, Center Intercommunal de Creteil, Creteil, France
| | - SriniVas Sadda
- Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, Calif; Department of Ophthalmology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, Calif
| | - Giovanna Vella
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy; Ophthalmology Unit, Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy
| | - Lisa Toto
- Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy
| | - Alexandra Miere
- Department of Ophthalmology, University of Paris XII, Center Intercommunal de Creteil, Creteil, France
| | - Giulia Corradetti
- Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, Calif; Department of Ophthalmology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, Calif
| | - Riccardo Sacconi
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy
| | - Giada Ferro
- Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy
| | - David Sarraf
- Department of Ophthalmology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, Calif; Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, California
| | - Lea Querques
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy
| | - Rodolfo Mastropasqua
- Institute of Ophthalmology, University of Modena and Reggio Emilia, Modena, Italy
| | - Francesco Bandello
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy
| | - Giuseppe Querques
- Vita-Salute San Raffaele University, Milan, Italy; San Raffaele Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Milan, Italy; Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles, Calif.
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Mao J, Cheng D, Lin J, Chen Y, Lv Z, Shen L. Evaluating Retinal Angiomatous Proliferation With Optical Coherence Tomography Angiography. Ophthalmic Surg Lasers Imaging Retina 2021; 51:136-144. [PMID: 32211903 DOI: 10.3928/23258160-20200228-02] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/10/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND OBJECTIVE To report the imaging features of different stages of retinal angiomatous proliferation (RAP) on optical coherence tomography angiography (OCTA). PATIENTS AND METHODS Patients diagnosed with RAP were included in this study. All patients underwent fluorescein angiography (FA), indocyanine green angiography (ICGA), optical coherence tomography (OCT), and OCTA. The OCTA features were illustrated and compared with FA, ICGA, and OCT. OCTA was performed at baseline and after injection of anti-vascular endothelial growth factor (VEGF). RESULTS A total of 12 eyes of 12 consecutive patients were included. Patients' ages ranged from 57 to 82 years. In all cases, the hot spot lesions found on FA or ICGA were clearly detected on OCTA in the same area (12/12, 100%). Hot spot lesions showed variable patterns. Four patients had multiple hot spot lesions located on the outer retina layer, deep layer, or superior retinal layer. OCTA showed a clearer location and relationship with feeder vessels compared with FA or ICGA. Eight patients had received anti-VEGF therapy 1.75 ± 1.06 times. Follow-up OCTA images demonstrated smaller and fewer hot spot lesions with lesser blood flow signal. CONCLUSIONS OCTA is a noninvasive, fast imaging modality for detecting microvascular changes, and it provides more detail of the RAP lesion and related vessels than ICGA or FA. OCTA would be a valuable tool for follow-up observation. The OCTA patterns of RAP may be helpful in understanding its pathology. [Ophthalmic Surg Lasers Imaging Retina. 2020;51:136-144.].
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Cho HJ, Lim SH, Kim J, Lee J, Lee DW, Kim JW. Assessing the long-term evolution of type 3 neovascularization in age-related macular degeneration using optical coherence tomography angiography. Graefes Arch Clin Exp Ophthalmol 2021; 259:2605-2613. [PMID: 33744984 DOI: 10.1007/s00417-021-05163-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/15/2021] [Accepted: 03/12/2021] [Indexed: 11/25/2022] Open
Abstract
PURPOSE To analyze the evolution of type 3 neovascularization in eyes with age-related macular degeneration during anti-vascular endothelial growth factor (VEGF) treatment using optical coherence tomography angiography (OCTA) analysis. METHODS Forty-one treatment-naïve eyes (37 patients) with type 3 neovascularization were retrospectively included in the study. The growth and morphological changes in the type 3 lesions, which were recorded using OCTA, were compared across time. RESULTS The high-flow signal of the lesion on OCTA was significantly increased at the sub-retinal pigment epithelium (RPE) and the choriocapillaris during anti-VEGF treatment. The detection rate of the flow signal in the sub-RPE increased from 50.0% at baseline and 51.2% at 12 months to 65.9% at 24 months (P = 0.013). The flow signal extending into the choriocapillaris was detected in 0% of the eyes at baseline, 9.8% of the eyes at 12 months, and 17.1% of the eyes at 24 months (P = 0.018). The presence of subretinal drusenoid deposits (SDD) was significantly more frequent in the group with extension into the choriocapillaris (100%) than in the group without (61.8%, P = 0.036). For the four eyes with extension into the choroid, the morphological feature of the lesion on en face OCTA evolved into a tangled vascular network, similar to type 1 neovascularization. CONCLUSION OCTA analysis revealed that type 3 neovascularization gradually extended downward toward the sub-RPE and choroid during anti-VEGF treatment. The extension of the lesion into the choriocapillaris, suggesting retinal-choroidal anastomosis, was significantly more frequent in eyes with SDD.
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Affiliation(s)
- Han Joo Cho
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea.
| | - Soo Hyun Lim
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea
| | - Jaemin Kim
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea
| | - Jihyun Lee
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea
| | - Dong Won Lee
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea
| | - Jong Woo Kim
- Kim's Eye Hospital, Konyang University College of Medicine, 156, 4ga, Yeongdeungpo-dong, Yeongdeungpo-gu, Seoul, South Korea
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15
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Smid LM, Vermeer KA, Wong KT, Martinez Ciriano JP, de Jong JH, Davidoiu V, de Boer JF, van Velthoven MEJ. Detailed optical coherence tomography angiographic short-term response of type 3 neovascularization to combined treatment with photodynamic therapy and intravitreal bevacizumab. Acta Ophthalmol 2021; 99:207-214. [PMID: 32602240 PMCID: PMC7983957 DOI: 10.1111/aos.14525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE To explore the short-term vascular and structural changes of type 3 neovascularization using optical coherence tomography angiography (OCT-A) when treated with a combination of photodynamic therapy (PDT) and intravitreal bevacizumab (IVB), and to evaluate the course of different sequences of the combined therapies. METHODS Thirty eyes of 29 treatment-naïve patients with a type 3 neovascularization were included in this prospective observational cohort study. They were all treated with PDT and IVB 2 weeks apart, starting either with PDT (PDT-first group) or IVB (IVB-first group). Optical coherence tomography angiography (OCT-A) imaging was performed at week 0, 2, 4 and 18, and best corrected visual acuity (BCVA) at week 0 and 18. Vascular, structural and functional features were graded and analysed over time. RESULTS In all patients, at all follow-up visits, vascular and structural features were significantly more often decreased or resolved than unchanged or increased. Best corrected visual acuity (BCVA) significantly improved at 18 weeks. Vascular, structural and functional outcomes were all slightly better in the PDT-first group compared to the IVB-first group, although not statistically significant. CONCLUSION Combined treatment of PDT and IVB is effective in short-term for type 3 neovascularization based on vascular and structural features. Initial treatment with PDT tended to be more effective than with IVB.
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Affiliation(s)
| | | | | | | | | | - Valentina Davidoiu
- Institute for Lasers, Life and Biophotonics AmsterdamDepartment of Physics and AstronomyVU UniversityAmsterdamThe Netherlands
| | - Johannes F. de Boer
- Institute for Lasers, Life and Biophotonics AmsterdamDepartment of Physics and AstronomyVU UniversityAmsterdamThe Netherlands
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Optical Coherence Tomography Angiography of the Choriocapillaris in Age-Related Macular Degeneration. J Clin Med 2021; 10:jcm10040751. [PMID: 33668537 PMCID: PMC7918036 DOI: 10.3390/jcm10040751] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 12/11/2022] Open
Abstract
The advent of optical coherence tomography angiography (OCTA) has allowed for remarkable advancements in our understanding of the role of the choriocapillaris in age-related macular degeneration (AMD). As a relatively new imaging modality, techniques to analyze and quantify choriocapillaris images are still evolving. Quantification of the choriocapillaris requires careful consideration of many factors, including the type of OCTA device, segmentation of the choriocapillaris slab, image processing techniques, and thresholding method. OCTA imaging shows that the choriocapillaris is impaired in intermediate non-neovascular AMD, and the severity of impairment may predict the advancement of disease. In advanced atrophic AMD, the choriocapillaris is severely impaired underneath the area of geographic atrophy, and the level of impairment surrounding the lesion predicts the rate of atrophy enlargement. Macular neovascularization can be readily identified and classified using OCTA, but it is still unclear if neovascularization features with OCTA can predict the lesion’s level of activity. The choriocapillaris surrounding macular neovascularization is impaired while the more peripheral choriocapillaris is spared, implying that choriocapillaris disruption may drive neovascularization growth. With continued innovation in OCTA image acquisition and analysis methods, advancement in clinical applications and pathophysiologic discoveries in AMD are set to follow.
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17
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CHARACTERISTICS AND CLASSIFICATION OF TYPE 3 NEOVASCULARIZATION WITH B-SCAN FLOW OVERLAY AND EN FACE FLOW IMAGES OF OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY. Retina 2021; 40:109-120. [PMID: 30308559 DOI: 10.1097/iae.0000000000002357] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To study B-scan flow overlay and en face flow optical coherence tomography angiography (OCT-A) images of Type 3 neovascularization (NV) and to characterize a staging system for Type 3 NV based on the OCT-A findings. METHODS We retrospectively collected data on consecutive treatment-naive eyes with Type 3 NV. All eyes underwent fluorescein angiography, indocyanine green angiography, structural spectral domain OCT, and OCT-A (AngioPlex). Localization and extension of abnormal flows detected by B-scan flow overlay and en face OCT-A images were assessed. RESULTS Of 24 eyes of 22 patients with Type 3 NV, B-scan flow overlay images showed that 4.2% had telangiectatic flow in the deep retinal layer without outer plexiform layer disruption (Stage 1), 8.3% had downward intraretinal flow and subretinal flow without retinal pigment epithelium disruption (Stage 2), and 87.5% had downward flow and retinal pigment epithelium disruption (Stage 3). Of the Stage 3 eyes, 95.2% showed flow signal penetrating at the site of the retinal pigment epithelium disruption on the B-scan flow overlay images. CONCLUSION We showed the characteristics of Type 3 NV using B-scan flow overlay and en face OCT-A images. B-scan flow overlay OCT-A images seem useful to improve the detection and accurate diagnosis of Type 3 NV.
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18
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Chwiejczak K, Biswas S, Tsamis E, Siso-Fuertes I, Kasbia S, Stanga PE. Macular fibrosis in Coats' disease demonstrated by Optical Coherence Tomography Angiography - new data toward pathophysiology. Eur J Ophthalmol 2021; 31:3157-3163. [PMID: 33426922 DOI: 10.1177/1120672120986366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE To analyze if Segmented Swept-Source Optical Coherence Tomography Angiography (SS OCT-A) can provide additional information on morphology and pathophysiology of macular fibrosis in Coats' patients. METHODS A consecutive case series of three male patients (5, 7 and 15 years old), with Coats' disease-related macular fibrosis (stage 2b-2 patients, 3b-1 patient). SS OCT-A 3×3 mm macular scans of affected eyes were performed. RESULTS In all three cases the inner portion of macular fibrosis displayed a dense network of vessels, continuing into deeper layers. This structure was similar to that observed in retinal angiomatous proliferations (RAP). There was associated loss of the foveal avascular zone. In one case we observed evolution of the lesion. CONCLUSION SS-OCT imaging of macular fibrosis in Coats' disease reveals a distinct intralesional vascular structure with elements resembling RAP, probably developing as a secondary process.
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Affiliation(s)
- Katarzyna Chwiejczak
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Susmito Biswas
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK.,Division of Evolution & Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Emmanouil Tsamis
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Irene Siso-Fuertes
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Shakti Kasbia
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Paulo E Stanga
- Manchester Vision Regeneration (MVR) Lab at Manchester Royal Eye Hospital & NIHR/Wellcome Trust Manchester CRF and Manchester Royal Eye Hospital, Manchester University Hospitals NHS Foundation Trust, Manchester, UK.,London Vision Clinic-Retina, London, UK
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SENSITIVITY OF 840-nm SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN DETECTING TYPE 1 NEOVASCULARIZATION ACCORDING TO THE HEIGHT OF THE ASSOCIATED PIGMENT EPITHELIAL DETACHMENT. Retina 2020; 39:1973-1984. [PMID: 30015765 DOI: 10.1097/iae.0000000000002244] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE To evaluate the ability of optical coherence tomography angiography (OCTA) to detect abnormal vascular blood flow in Type 1 neovascularization (NV) with or without significant pigment epithelial detachment (PED). METHODS Consecutive age-related macular degeneration patients with either treatment-naive or anti-vascular endothelial growth factor-treated Type 1 NV were divided into 2 groups based on the PED height on structural OCT: greater than 250 μm (Group 1) versus less than 250 μm (Group 2). Two independent senior retina specialists analyzed the OCTA images (Zeiss Angioplex OCT, Carl Zeiss AG, Jena, Germany) using the automatic slabs alone (first reader) versus automatic and manual segmentation slabs (second reader). RESULTS In Group 1, 15 men and 42 women, aged from 51 years to 97 years (mean: 87.5), were included. Optical coherence tomography angiography was able to show an abnormal blood flow suggestive of Type 1 NV in 23 (40.3%) of 57 eyes for the first reader and in 32 (56.1%) of 57 eyes for the second reader. In Group 2, 7 men and 30 women, aged from 60 years to 96 years (mean: 80.2), were included. The first and second readers were able to observe an image suggestive of Type 1 NV in 33/37 (89.2%) and 37/37 (100%) of eyes, respectively. CONCLUSION The ability of OCTA to detect an abnormal blood flow in Type 1 NV was found to highly depend on the height of the associated PED and the use of manual segmentation slabs. Our results suggest that automatic slabs of OCTA should be interpreted with caution for the diagnosis of vascularized PED. The diagnosis of Type 1 NV using OCTA requires the use of manual segmentation and a multimodal imaging approach, especially when the height of the associated PED is >250 μm.
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20
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Levine ES, Custo Greig E, Mendonça LSM, Gulati S, Despotovic IN, Alibhai AY, Moult E, Muakkassa N, Quaranta-El Maftouhi M, El Maftouhi A, Chakravarthy U, Fujimoto JG, Baumal CR, Witkin AJ, Duker JS, Hartnett ME, Waheed NK. The long-term effects of anti-vascular endothelial growth factor therapy on the optical coherence tomography angiographic appearance of neovascularization in age-related macular degeneration. Int J Retina Vitreous 2020; 6:39. [PMID: 32844038 PMCID: PMC7441632 DOI: 10.1186/s40942-020-00242-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/11/2020] [Indexed: 11/10/2022] Open
Abstract
Background The short-term effects of anti-vascular endothelial growth factor (anti-VEGF) treatment on macular neovascularization (MNV) morphology is well described, but long-term studies on morphologic changes and correlation of such changes to the type of MNV have not been conducted. This study aims to determine if different types of MNVs in neovascular AMD (nAMD) behave differently with anti-VEGF treatment as visualized on optical coherence tomography angiography (OCTA). Methods Treatment-naïve nAMD patients were retrospectively screened for baseline and follow-up OCTA imaging 10 or more months after initial treatment. Images were graded for MNV type, area, activity, mature versus immature vessels, vessel density, presence of atrophy, atrophy location and area. Growth rate was calculated as the percent change in lesion area from baseline over the years of follow-up. In addition, the occurrence of complete regression and the percent of lesions that grew, remained stable, and shrunk per type was also evaluated. Results Forty-three eyes from 43 patients with a mean follow-up of 2 years were evaluated. On structural OCT, 26 lesions were classified as pure type 1 MNVs, 12 MNVs had a type 2 component, and 5 MNVs had a type 3 component. Of these cases, 2 mixed-type MNVs were considered to have completely regressed. There was no significant differences in MNV area and growth rate between type 1 and type 2 lesions, but all cases of type 3 lesions shrunk in the follow-up period. There was no correlation between the number of injections per year and growth rate, endpoint MNV area or endpoint activity status for any MNV type. There was no significant association between the development of atrophy and the number of injections, baseline MNV area, baseline vessel density, or lesion growth rate. Conclusions In nAMD, complete regression of an MNV network exposed to anti-VEGF is rare. This work emphasizes the role of anti-VEGF as anti-leakage rather than vascular regression agents in nAMD.
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Affiliation(s)
- Emily S Levine
- New England Eye Center, Tufts Medical Center, Boston, MA USA.,Tufts University School of Medicine, Boston, MA USA
| | - Eugenia Custo Greig
- New England Eye Center, Tufts Medical Center, Boston, MA USA.,Yale School of Medicine, New Haven, CT USA
| | - Luísa S M Mendonça
- New England Eye Center, Tufts Medical Center, Boston, MA USA.,Department of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil
| | - Shilpa Gulati
- New England Eye Center, Tufts Medical Center, Boston, MA USA
| | | | - A Yasin Alibhai
- New England Eye Center, Tufts Medical Center, Boston, MA USA
| | - Eric Moult
- Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA USA
| | | | | | | | | | - James G Fujimoto
- Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA USA
| | | | - Andre J Witkin
- New England Eye Center, Tufts Medical Center, Boston, MA USA
| | - Jay S Duker
- New England Eye Center, Tufts Medical Center, Boston, MA USA
| | | | - Nadia K Waheed
- New England Eye Center, Tufts Medical Center, Boston, MA USA.,Department of Ophthalmology, Tufts Medical Center, 800 Washington Street, Box 450, Boston, MA 02111 USA
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Silva N, Marta A, Baptista P, Furtado MJ, Lume M. Optical Coherence Tomography Findings (SD-OCT and OCTA) in Early-Stage Type 3 Neovascularization. Case Rep Ophthalmol 2020; 11:493-499. [PMID: 32999681 PMCID: PMC7506272 DOI: 10.1159/000509139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 06/03/2020] [Indexed: 11/19/2022] Open
Abstract
A 76-year-old male presented with a small hyperreflective density in the outer nuclear layer with subtle retinal pigment epithelium (RPE) elevation and few intraretinal cysts on spectral-domain optical coherence tomography (SD-OCT). Optical coherence tomography angiography (OCTA) confirmed the presence of a tuft-shaped intraretinal neovascular lesion. SD-OCT performed 2 months before showed a smaller RPE elevation at the same location without intraretinal fluid. A 79-year-old male presented with a small hyperreflective density in the outer retina surrounded by scant intraretinal fluid on SD-OCT and a bright vessel on OCTA, suggesting early-stage type 3 neovascularization. SD-OCT performed 2 months before showed a smaller hyperreflectivity at the same location, without intraretinal fluid. An 84-year-old female presented with hyperreflective foci in the outer retina overlying a serous pigment epithelium detachment (PED) with focal RPE disruption on SD-OCT. SD-OCT performed 2 months before showed the same hyperreflective lesion associated with a shallower PED. No neovascular lesions were found on OCTA after six injections of bevacizumab. To conclude, careful evaluation of SD-OCT allows for early detection of type 3 neovascularization at a pre-exudative stage. OCTA may be useful in confirming the presence of intraretinal neovascular lesion and monitoring response to anti-vascular endothelial growth factor agents.
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Affiliation(s)
- Nisa Silva
- Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Porto, Portugal
| | - Ana Marta
- Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Porto, Portugal
| | - Pedro Baptista
- Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Porto, Portugal
| | - Maria João Furtado
- Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Porto, Portugal
| | - Miguel Lume
- Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Porto, Portugal
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CHANGES IN OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY AND DISEASE ACTIVITY IN TYPE 3 NEOVASCULARIZATION AFTER ANTI–VASCULAR ENDOTHELIAL GROWTH FACTOR TREATMENT. Retina 2020; 40:1245-1254. [DOI: 10.1097/iae.0000000000002562] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Babiuch Md AS, Uchida Md PhD A, Figueiredo Md N, Hu PhD M, Khan Md M, Srivastava Md SK, Singh Md RP, Rachitskaya Md A, Kaiser Md PK, Reese Bsn JL, Ehlers Md JP. IMPACT OF OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY REVIEW STRATEGY ON DETECTION OF CHOROIDAL NEOVASCULARIZATION. Retina 2020; 40:672-678. [PMID: 30762650 DOI: 10.1097/iae.0000000000002443] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To compare optical coherence tomography angiography (OCTA) review strategies for optimizing choroidal neovascularization (CNV) detection. METHODS Eyes with CNV in the differential diagnosis were imaged with the Avanti RTVue XR HD (Optovue, Fremont, CA). Three modalities of review for CNV presence were used in each case: a single report generated using automated segmentation within Avanti software; a continuous slab descent video OCTA export; and a manual segmentation approach using cross-sectional OCT with decorrelation signal overlay. Scans were reviewed by two masked expert reviewers; a third reviewer was used for discrepancies. RESULTS The study included 421 eyes, and 350 eyes had reports deemed sufficient quality for interpretation. Choroidal neovascularization was in the differential diagnosis in 107 of 350 patients. Overall CNV was identified in 55% (59/107) eyes. In those eyes with CNV, the automated segmentation identified CNV in 56% (33/59) of cases, continuous slab descent method identified CNV in 53% (31/59) of cases, and the manual segmentation group identified CNV in 92% (54/59) of cases. CONCLUSION Review strategies for detection of CNV on OCTA were highest using the manual segmentation method as compared to both the automated report and continuous slab descent methods. Although the manual segmentation method had a higher rate of detection, the practical aspects of the time required for segmentation make this method challenging in routine clinical practice.
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Affiliation(s)
- Amy S Babiuch Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
| | - Atsuro Uchida Md PhD
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
| | - Natalia Figueiredo Md
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
| | - Ming Hu PhD
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
- Department of Quantitative Health Sciences, Cleveland Clinic Foundation, Lerner Research Institute, Cleveland, Ohio
| | - Mehnaz Khan Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
| | - Sunil K Srivastava Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
| | - Rishi P Singh Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
| | | | - Peter K Kaiser Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
| | - Jamie L Reese Bsn
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
| | - Justis P Ehlers Md
- Vitreoretinal Service, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cleveland Clinic Foundation, Cole Eye Institute, Cleveland, Ohio; and
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Sacconi R, Battista M, Borrelli E, Miere A, Corbelli E, Capuano V, Querques L, Souied EH, Bandello F, Querques G. OCT-A characterisation of recurrent type 3 macular neovascularisation. Br J Ophthalmol 2020; 105:222-226. [DOI: 10.1136/bjophthalmol-2020-316054] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/15/2020] [Accepted: 03/19/2020] [Indexed: 11/04/2022]
Abstract
PurposeTo investigate optical coherence tomography angiography (OCT-A) findings in recurrent type 3 macular neovascularisation (MNV).MethodsIn this retrospective cohort study, consecutive patients with type 3 MNV secondary to age-related macular degeneration underwent OCT-A at three different time points: baseline, after anti-vascular endothelial growth factor treatment with complete resolution of the exudative signs (ie, non-exudative stage) and at the recurrence of exudation (ie, recurrence stage). Demographics and clinical findings were analysed, including OCT-A features of type 3 MNV recurrence.ResultsTwelve eyes (12 patients, mean age 78±7 years) were included. Using OCT-A, at baseline all type 3 MNVs showed the presence of detectable flow downgrowing from the deep vascular complex (DVC) to the retinal pigment epithelium (RPE)/sub-RPE space. 6/12 eyes (50%) showed anomalous flow under the RPE, while the other 6 eyes showed flow reaching the RPE without anomalous flow in the sub-RPE space. At the non-exudative stage (after treatment), BCVA and CMT significantly improved (p=0.004 and p=0.036), and flow inside the retinal lesions reduced; interestingly the connection to the RPE/sub-RPE space regressed. At the time of recurrence, all type 3 MNVs showed the presence of intra/sub-retinal exudation with restoration of the flow deepening from the DVC to the RPE/sub-RPE space.ConclusionsDetectable flow deepening from the DVC to the RPE/sub-RPE space using OCT-A is mandatory to have a new exudation secondary to recurrent type 3 MNV. Early detection of type 3 MNV recurrence by OCT-A characterisation may prompt retreatment and potentially prevent progression to late stages of the disease.
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Impact of optical coherence tomography angiography on the non-invasive diagnosis of neovascular age-related macular degeneration. Graefes Arch Clin Exp Ophthalmol 2020; 258:537-541. [PMID: 31900638 DOI: 10.1007/s00417-019-04581-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/18/2019] [Accepted: 12/19/2019] [Indexed: 10/25/2022] Open
Abstract
PURPOSE To investigate the changes in imaging tool practice for the diagnosis of neovascular age-related macular degeneration (nAMD). METHODS Retrospective analysis of consecutive patients diagnosed with nAMD in a tertiary care center, over a 6-month period in 2014, 2016, and 2018. Patient demographics were compared. Imaging modalities used in 2014 were fundus photography, fluorescein angiography (FA), and structural spectral-domain optical coherence tomography (SD-OCT), while OCT-angiography (OCT-A) was available from 2015. Imaging tools used in our practice were compared in the 3 cohorts. RESULTS The 3 cohorts included 163, 99, and 167 patients, respectively. There was no difference in age or gender (mean age 81.7 years). OCT-A images were analyzable in 60.5% and 89.7% of patients respectively in 2016 and in 2018. In the 3 cohorts, all patients were imaged with fundus photography and structural OCT. FA was performed in 70.2, 28.8, and 22.1% of patients, respectively. CONCLUSION This study showed a shift in practice of imaging tools used for the diagnosis of nAMD, non-invasive tools being increasingly used as the first-line imaging, and FA as the second-line imaging.
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Rotational Three-dimensional OCTA: a Notable New Imaging Tool to Characterize Type 3 Macular Neovascularization. Sci Rep 2019; 9:17053. [PMID: 31745216 PMCID: PMC6863896 DOI: 10.1038/s41598-019-53307-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/26/2019] [Indexed: 11/08/2022] Open
Abstract
This study explored whether rotational three-dimensional (3D) visualization of optical coherence tomography angiography (OCTA) volume data may yield valuable information regarding type 3 macular neovascularization (MNV). In this retrospective, cross-sectional study, we collected data from 15 eyes (13 patients) with treatment-naïve type 3 MNV in their post-nascent stage and age-related macular degeneration (AMD). Subjects were imaged with the SS-OCT system (PLEX Elite 9000, Carl Zeiss Meditec Inc., Dublin, CA, USA). The OCTA volume data were processed with a prototype volume projection removal algorithm and then analyzed using volumetric visualization techniques in order to obtain a 3D visualization of the region occupied by type 3 MNV. The two-dimensional and three-dimensional OCTA images were investigated. Mean ± SD age was 75.1 ± 7.4 years. BCVA was 0.42 ± 0.21 LogMAR in the study eyes. Considering the cohort of analyzed eyes, on rotational 3D OCTA images, a total of 35 neovascular lesions (vs 22 lesions detected on 2D OCTA images) rising from the deep vascular complex and variably spanning the outer retinal layers and eventually reaching the RPE/sub-RPE space were detected. Nine of 35 lesions had a saccular shape, while the remaining cases had a filiform shape. On rotational 3D OCTA images, these lesions were inclined on the three planes, instead of perpendicular to the RPE/Bruch’s membrane. In conclusion, this study used an algorithm to obtain rotational three-dimensional visualization of type 3 MNV. This approach seems to increase the detection rate for these lesions and to be useful to offer new insight into type 3 MNV.
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Uchida A, Hu M, Babiuch A, Srivastava SK, Singh RP, Kaiser PK, Talcott K, Rachitskaya A, Ehlers JP. Optical coherence tomography angiography characteristics of choroidal neovascularization requiring varied dosing frequencies in treat-and-extend management: An analysis of the AVATAR study. PLoS One 2019; 14:e0218889. [PMID: 31237929 PMCID: PMC6592566 DOI: 10.1371/journal.pone.0218889] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 06/11/2019] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To evaluate optical coherence tomography angiography (OCTA) characteristics of choroidal neovascularization (CNV) in eyes requiring different treatment frequency of anti-vascular endothelial growth factor (VEGF) therapy for neovascular age-related macular degeneration (NVAMD). DESIGN Prospective observational case series. METHODS Subjects who had undergone anti-VEGF treatment for NVAMD in the AVATAR study were subdivided into 3 groups depending on required anti-VEGF dosing: (i) treat-and-extend requiring every 4-6 weeks dosing (TEq4-6w), (ii) treat-and-extend requiring every 7-12 weeks dosing (TEq7-12w), (iii) eyes not requiring injection within last 12 months (PRN >12mo). OCTA images were evaluated for the morphological characteristics of CNV and the choriocapillaris flow void. RESULTS Study consisted 40 eyes of 31 patients with a mean age of 79.9 ± 6.2 years. CNV morphology analysis on OCTA was feasible in 29 (73%) eyes. Ninety percent of CNVs in TEq7-12w group were irregular in shape involving foveal center, while 67% of CNVs in PRN>12mo group were circular in shape sparing foveal center. Among three groups, statistical difference was found in CNV shape (P = .012) and CNV location (P = .003), while no statistical difference was found in the CNV area (P = .14), vessel density (P = .19), presence of core vessels (P = .23), the presence of small margin loops (P = .20), large margin loops (P = .14), CNV maturity (P = .40), or the mean percentage of choriocapillaris area with flow void (P = .66). CONCLUSION The combination of CNV sparing the foveal center with higher circularity may suggest a clinically inactive CNV following initial anti-VEGF therapy. We found minimal distinguishing OCTA characteristics between those eyes that required ongoing therapy with the treat-and-extend regimen. More research is needed to identify specific CNV characteristics on OCTA that may become a useful tool for the management of NVAMD and timing of treatment.
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Affiliation(s)
- Atsuro Uchida
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Ming Hu
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Amy Babiuch
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Sunil K. Srivastava
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Rishi P. Singh
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Peter K. Kaiser
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Katherine Talcott
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Aleksandra Rachitskaya
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Justis P. Ehlers
- The Tony and Leona Campane Center for Excellence in Image-guided Surgery and Advanced Imaging Research, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- Retina Service, Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
- * E-mail:
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Ernest J, Manethova K, Kolar P, Sobisek L, Sacconi R, Querques G. One-Year Results of Fixed Aflibercept Treatment Regime in Type 3 Neovascularization. Ophthalmologica 2019; 243:58-65. [PMID: 31121590 DOI: 10.1159/000499719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 03/19/2019] [Indexed: 11/19/2022]
Abstract
PURPOSE To evaluate the effect of intravitreal aflibercept injections in treatment-naive type 3 neovascularization using a fixed treatment regime during the first year of therapy. METHODS Fourteen eyes of 14 patients diagnosed with type 3 neovascularization were studied. All patients were treated with intravitreal aflibercept injections using a fixed treatment regime of 3 consecutive monthly dosages followed by 2-month interval injections. Results were assessed after a 12-month follow-up period. Changes of best corrected visual acuity (BCVA), central retinal thickness (CRT), central macular volume (CMV), and retinal pigment epithelium (RPE) atrophy at fundus autofluorescence and infrared reflectance images were recorded and analyzed. RESULTS BCVA improved from 60.3 ± 11.7 ETDRS letters at the baseline to 70.9 ± 10.3 ETDRS letters at 12-months follow-up (p = 0.036). Also, CRT and CMV statistically improved after the treatment (from 425 ± 117 to 308 ± 117 µm [p = 0.031] and from 9.52 ± 1.90 to 8.29 ± 0.95 mm3 [p = 0.073], respectively). In 4 patients, development and progression of RPE atrophy were observed, and it was associated with the presence of serous pigment epithelium detachment at the baseline. Furthermore, the development of a fibrotic lesion eccentric to the fovea was observed in 5 patients, without significant impairment of BCVA (p = 0.290). CONCLUSION Intravitreal aflibercept administered in a fixed treatment regime during the first year of therapy may be effective for the improvement and stabilization of BCVA in eyes with type 3 neovascularization. However, RPE atrophy and subretinal/intraretinal fibrosis can develop during the treatment.
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Affiliation(s)
- Jan Ernest
- Department of Ophthalmology, Military University Hospital Prague, Prague, Czechia.,Axon Clinical Ltd., Clinical Research Centre, Prague, Czechia
| | - Katerina Manethova
- Department of Ophthalmology, Military University Hospital Prague, Prague, Czechia.,Axon Clinical Ltd., Clinical Research Centre, Prague, Czechia
| | - Petr Kolar
- Department of Ophthalmology, University Hospital Brno, Brno, Czechia
| | - Lukas Sobisek
- Department of Statistics and Probability, University of Economics in Prague, Prague, Czechia
| | - Riccardo Sacconi
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Giuseppe Querques
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy,
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Fayed AE, Fawzi AA. Projection resolved optical coherence tomography angiography to distinguish flow signal in retinal angiomatous proliferation from flow artifact. PLoS One 2019; 14:e0217109. [PMID: 31091288 PMCID: PMC6519823 DOI: 10.1371/journal.pone.0217109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/03/2019] [Indexed: 12/04/2022] Open
Abstract
PURPOSE To investigate whether hyperreflective foci (HRF) exhibit flow projection artifact on OCTA, and study the efficacy of commercial projection artifact removal software (PAR-OCTA, Optovue, Inc), and a custom projection resolved OCTA (PR-OCTA) in distinguishing artifacts from true flow in retinal angiomatous proliferation (RAP). METHODS The study included five eyes with HRF representing pigment migration in dry age-related macular degeneration (AMD), five eyes with leaking treatment-naïve RAP, and ten eyes with diabetic hard exudates. We examined flow signal on OCTA cross-sections using PAR, and performed PR-OCTA to study the effect of increasingly stringent projection removal thresholds. Flow signal intensity was analyzed and quantified using imageJ (NIH, Bethesda, MD, USA), by calculating the percentage of red pixels (R) representing flow, compared to green (G) and blue (B) pixels. RESULTS PAR-OCTA cross sections revealed persistent flow signal in all HRF, including RAP, hard exudates and pigment migration. In RAP, PR-OCTA detected intransigent flow, irrespective of the flow removal threshold. Mean R in the five RAP lesions remained higher than mean G and B at the most stringent PR-OCTA threshold (40.96% vs 29.52 and 29.52%, respectively), denoting persistence of flow. In contrast, increasing the PR-OCTA threshold in pigment migration and hard exudates removed the flow signal, with a statistically significant decrease in mean R with increasing threshold. (p = 0.017 and 0.0029, respectively). CONCLUSION Commercial PAR-OCTA is not completely effective at removing artifactual flow in hard exudates and HRF related to pigment migration. Custom built PR-OCTA, using a sliding scale of threshold, allowed us to distinguish true flow in RAP from artifactual flow in avascular HRF. Further studies are needed to validate the optimum threshold for projection artifact removal, which would preserve true flow in RAP and the small intraretinal capillaries.
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Affiliation(s)
- Alaa E. Fayed
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Department of Ophthalmology, Kasr Al-Ainy School of Medicine, Cairo University, Cairo, Egypt
| | - Amani A. Fawzi
- Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
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Kovach JL, Isildak H, Sarraf D. Crystalline retinopathy: Unifying pathogenic pathways of disease. Surv Ophthalmol 2019; 64:1-29. [DOI: 10.1016/j.survophthal.2018.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 08/01/2018] [Accepted: 08/06/2018] [Indexed: 01/02/2023]
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Singh SR, Vupparaboina KK, Goud A, Dansingani KK, Chhablani J. Choroidal imaging biomarkers. Surv Ophthalmol 2018; 64:312-333. [PMID: 30496750 DOI: 10.1016/j.survophthal.2018.11.002] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 11/18/2018] [Accepted: 11/19/2018] [Indexed: 12/22/2022]
Abstract
The choroid is the vascular coat of the eye, and its role has been studied in multiple chorioretinal disorders. Recent advancements in choroidal imaging techniques, including enhanced depth imaging optical coherence tomography, swept source optical coherence tomography, en face optical coherence tomography, and optical coherence tomography angiography have facilitated an in-depth analysis of the choroid. The gradual shift from manual to automated segmentation and binarization methods have led to precise and reproducible measurements of choroidal parameters. These qualitative and quantitative parameters, called choroidal imaging biomarkers, have evolved over the past decade from a simple linear subfoveal choroidal thickness to more complex 3D choroidal reconstruction, thus widening the spectrum encompassing multiple parameters. These biomarkers have provided a better understanding of the pathogenesis, are helpful in diagnostic dilemmas, and, in the future may also help to devise treatment options. The lack of normative data, absence of standardized parameters, and limitations of the imaging techniques, however, have led to ambiguity and difficulty in the interpretation of these variables. We attempt to address these lacunae in the literature and provide a basic understanding of the choroid in both health and disease using these choroidal biomarkers.
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Affiliation(s)
- Sumit Randhir Singh
- Smt. Kanuri Santhamma Centre for Vitreo-Retinal Diseases, LV Prasad Eye Institute, Hyderabad, India; Retina and Uveitis Department, GMR Varalakshmi Campus, LV Prasad Eye Institute, Visakhapatnam, Andhra Pradesh, India
| | - Kiran Kumar Vupparaboina
- Smt. Kanuri Santhamma Centre for Vitreo-Retinal Diseases, LV Prasad Eye Institute, Hyderabad, India
| | - Abhilash Goud
- Smt. Kanuri Santhamma Centre for Vitreo-Retinal Diseases, LV Prasad Eye Institute, Hyderabad, India
| | - Kunal K Dansingani
- Department of Ophthalmology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jay Chhablani
- Smt. Kanuri Santhamma Centre for Vitreo-Retinal Diseases, LV Prasad Eye Institute, Hyderabad, India.
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Curcio CA. Soft Drusen in Age-Related Macular Degeneration: Biology and Targeting Via the Oil Spill Strategies. Invest Ophthalmol Vis Sci 2018; 59:AMD160-AMD181. [PMID: 30357336 PMCID: PMC6733535 DOI: 10.1167/iovs.18-24882] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
AMD is a major cause of legal blindness in older adults approachable through multidisciplinary research involving human tissues and patients. AMD is a vascular-metabolic-inflammatory disease, in which two sets of extracellular deposits, soft drusen/basal linear deposit (BLinD) and subretinal drusenoid deposit (SDD), confer risk for end-stages of atrophy and neovascularization. Understanding how deposits form can lead to insights for new preventions and therapy. The topographic correspondence of BLinD and SDD with cones and rods, respectively, suggest newly realized exchange pathways among outer retinal cells and across Bruch's membrane and the subretinal space, in service of highly evolved, eye-specific physiology. This review focuses on soft drusen/BLinD, summarizing evidence that a major ultrastructural component is large apolipoprotein B,E-containing, cholesterol-rich lipoproteins secreted by the retinal pigment epithelium (RPE) that offload unneeded lipids of dietary and outer segment origin to create an atherosclerosis-like progression in the subRPE-basal lamina space. Clinical observations and an RPE cell culture system combine to suggest that soft drusen/BLinD form when secretions of functional RPE back up in the subRPE-basal lamina space by impaired egress across aged Bruch's membrane-choriocapillary endothelium. The soft drusen lifecycle includes growth, anterior migration of RPE atop drusen, then collapse, and atrophy. Proof-of-concept studies in humans and animal models suggest that targeting the “Oil Spill in Bruch's membrane” offers promise of treating a process in early AMD that underlies progression to both end-stages. A companion article addresses the antecedents of soft drusen within the biology of the macula.
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Affiliation(s)
- Christine A Curcio
- Department of Ophthalmology and Visual Sciences, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States
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Borrelli E, Sarraf D, Freund KB, Sadda SR. OCT angiography and evaluation of the choroid and choroidal vascular disorders. Prog Retin Eye Res 2018; 67:30-55. [DOI: 10.1016/j.preteyeres.2018.07.002] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/18/2018] [Accepted: 07/24/2018] [Indexed: 12/31/2022]
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Uchida A, Manjunath D, Singh RP, Rachitskaya AV, Kaiser PK, Srivastava SK, Reese JL, Ehlers JP. Optical Coherence Tomography Angiography in Eyes with Indeterminate Choroidal Neovascularization: Results from the AVATAR study. Ophthalmol Retina 2018; 2:1107-1117. [PMID: 30662973 PMCID: PMC6335035 DOI: 10.1016/j.oret.2018.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
OBJECTIVE To evaluate the use of optical coherence tomography angiography (OCTA) to detect choroidal neovascularization (CNV) in eyes with indeterminate CNV features on conventional imaging. DESIGN The AVATAR study is a prospective observational study of OCTA in patients undergoing routine spectral-domain optical coherence tomography (SD-OCT) for macular disease. PARTICIPANTS Subjects enrolled in the AVATAR study for which CNV was considered as part of a differential diagnosis based on clinical exam and/or prior imaging, but in whom the presence of CNV was not definitive on SD-OCT and fluorescein angiography (FA) imaging. INTERVENTIONS All patients were imaged with the Avanti RTVue XR HD (Optovue, Fremont, CA) and the Cirrus HD-OCT (Zeiss, Oberkochen, Germany) systems. MAIN OUTCOME MEASURES OCTA scans were assessed for the presence or absence of CNV. SD-OCT scans were assessed for the presence of fluid, hyperreflective material, serous pigment epithelial detachment (PED), shallow irregular PED, vitreomacular adhesion, epiretinal membrane, retinal pigment epithelium atrophy and central subfield retinal thickness. Univariate and multivariate logistic regression analyses were performed to identify features on SD-OCT associated with the presence of CNV on OCTA. RESULTS Twenty-nine eyes of 29 patients met the criteria for inclusion. A CNV lesion was detected on OCTA in 8 (28%) eyes; 21 (72%) eyes were negative for CNV. After adjusted for age, gender and central subfield retinal thickness, the presence of shallow irregular PED [odds ratio, 148; 95% confidence interval, 3.22-6830; p = 0.011], as well as the combinations of intraretinal fluid and sub-retinal pigment epithelium material [odds ratio, 16.8; 95% confidence interval, 1.43-198; p = 0.025] on SD-OCT were significantly associated with the presence of CNV on OCTA. CONCLUSIONS OCTA enabled the identification of CNV that was otherwise indeterminate with prior imaging in select eyes. The presence of a shallow irregular PED as well as intraretinal fluid combined with sub-retinal pigment epithelium material were both associated with the presence of CNV. OCTA may be a valuable adjunct to conventional SD-OCT and FA imaging in the detection and surveillance of CNV, particularly in diagnostic dilemmas.
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Affiliation(s)
- Atsuro Uchida
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | - Deepa Manjunath
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | - Rishi P. Singh
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | | | - Peter K. Kaiser
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | - Sunil K. Srivastava
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | - Jamie L. Reese
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
| | - Justis P. Ehlers
- Ophthalmic Imaging Center, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
- Cole Eye Institute, Cleveland Clinic, 2022 E 105 St, Cleveland, OH 44106
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Sacconi R, Sarraf D, Garrity S, Freund KB, Yannuzzi LA, Gal-Or O, Souied E, Sieiro A, Corbelli E, Carnevali A, Querques L, Bandello F, Querques G. Nascent Type 3 Neovascularization in Age-Related Macular Degeneration. Ophthalmol Retina 2018; 2:1097-1106. [PMID: 31047548 DOI: 10.1016/j.oret.2018.04.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 04/12/2018] [Accepted: 04/20/2018] [Indexed: 06/09/2023]
Abstract
PURPOSE To describe the preclinical and very early stages of type 3 neovascularization using multimodal retinal imaging to expand our understanding of the pathogenesis of this disorder and potentially to prevent late treatment. DESIGN Retrospective cohort study. PARTICIPANTS Patients diagnosed with treatment-naïve type 3 neovascularization in the setting of age-related macular degeneration were identified at 4 retina referral centers. Inclusion criteria were: patients older than 55 years with at least 1 OCT and OCT angiography (OCTA) examination before the onset of clinically active type 3 neovascularization (i.e., preclinical stage). METHODS Patients underwent a complete ophthalmologic examination including at least OCT and OCTA at the baseline and preclinical stage examinations, and dye angiographies when available. Demographics and clinical findings were analyzed. MAIN OUTCOME MEASURES Description of multimodal imaging features of nascent type 3 neovascularization. RESULTS Fifteen eyes (15 patients; mean age, 83 ± 9 years) were included. At the baseline, mean BCVA was 0.32 ± 0.17 logarithm of the minimum angle of resolution and central macular thickness was 313 ± 50 μm. Preclinical (i.e., prebaseline) structural OCT illustrated the presence of intraretinal hyperreflective foci (HRF) at the site of type 3 neovascularization development in all patients. These foci were characterized by hyperfluorescence on dye angiography and by detectable flow on OCTA, identified with either the avascular slab (20%) or with both the deep retinal capillary plexus (DCP) and avascular slabs (80%). Typically, HRF with detectable flow on OCTA were characterized by the absence of intraretinal exudation (or very mild microcystic changes) until the lesion progressed from the DCP into the retinal pigment epithelium (RPE) and sub-RPE space. Of note, in 1 patient we observed the complete resolution of HRF despite the presence of OCTA flow and dye angiography hyperfluorescence detected at the preclinical stage examination. CONCLUSIONS Hyperreflective foci on structural OCT may represent early intraretinal neovascularization originating from the DCP, namely nascent type 3 neovascularization; these lesions can progress to active type 3 neovascularization or more rarely may regress without functional impairment. An advanced multimodal imaging approach is useful in detecting nascent type 3 lesions, which should be followed up carefully and treated as soon as possible if flow progresses to the RPE and sub-RPE space to prevent progression to late stages.
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Affiliation(s)
- Riccardo Sacconi
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy; Eye Clinic, Department of Neurological, Biomedical and Movement Sciences, University of Verona, Verona, Italy
| | - David Sarraf
- Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, University of California, Los Angeles, Los Angeles, California; Greater Los Angeles VA Healthcare Center, Los Angeles, California
| | - Sean Garrity
- Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, University of California, Los Angeles, Los Angeles, California; Greater Los Angeles VA Healthcare Center, Los Angeles, California
| | - K Bailey Freund
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, New York University Langone Medical Center, New York, New York
| | - Lawrence A Yannuzzi
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, New York University Langone Medical Center, New York, New York
| | - Orly Gal-Or
- Vitreous Retina Macula Consultants of New York, New York, New York; Department of Ophthalmology, New York University Langone Medical Center, New York, New York; Department of Ophthalmology, Rabin Medical Center, Petach-Tikva, Israel
| | - Eric Souied
- Department of Ophthalmology, Hospital Intercommunal de Creteil, University Paris Est Creteil, Creteil, France
| | - André Sieiro
- Department of Ophthalmology, Hospital Intercommunal de Creteil, University Paris Est Creteil, Creteil, France
| | - Eleonora Corbelli
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Adriano Carnevali
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy; Department of Ophthalmology, University of "Magna Graecia", Catanzaro, Italy
| | - Lea Querques
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Francesco Bandello
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Giuseppe Querques
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, Milan, Italy.
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The diagnostic accuracy of OCT angiography in naive and treated neovascular age-related macular degeneration: a review. Eye (Lond) 2018; 33:274-282. [PMID: 30382236 DOI: 10.1038/s41433-018-0229-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 07/10/2018] [Accepted: 08/24/2018] [Indexed: 01/08/2023] Open
Abstract
Optical coherence tomography angiography (OCTA) is a non-invasive retinal imaging innovation that has been gaining popularity for the evaluation of the retinal vasculature. Of clinical importance is its current use either as an alternative or in conjunction with conventional dye-based angiography in neovascular age-related macular degeneration. OCTA is not without limitations and these include image artefact, a relatively small field of view and failure of the segmentation algorithms, which can confound the interpretation of findings. While there are numerous publications on OCTA in neovascular AMD, few have examined the diagnostic accuracy of this new technology compared with the accepted gold standard of fundus fluorescein angiography (FFA). In this review, we summarise the literature on the clinical application of OCTA in nAMD. In particular, we have reviewed the published articles that have reported the sensitivity and specificity of OCTA in the diagnosis of nAMD, and those that have described and or correlated the morphological findings and compared them to dye-based angiography.
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de Jong JH, Braaf B, Amarakoon S, Gräfe M, Yzer S, Vermeer KA, Missotten T, de Boer JF, van Velthoven MEJ. Treatment Effects in Retinal Angiomatous Proliferation Imaged with OCT Angiography. Ophthalmologica 2018; 241:143-153. [PMID: 30227415 DOI: 10.1159/000491798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 07/04/2018] [Indexed: 11/19/2022]
Abstract
PURPOSE This prospective case series is aimed at exploring optical coherence tomographic angiography (OCT-A) as a treatment monitoring tool in patients treated for retinal angiomatous proliferation (RAP). METHODS Twelve treatment-naïve RAP patients were included, with a median age of 79 years (range 65-90). Patients were imaged with an experimental 1,040-nm swept-source phase-resolved OCT-A instrument before and after treatment. Treatment consisted of either intravitreal bevacizumab or triamcinolone injections with or without photodynamic therapy (PDT). Abnormal blood flow after treatment was graded as increased, unchanged, decreased, or resolved. RESULTS OCT-A images before and after treatment could be obtained in 9 patients. The median follow-up period was 10 weeks (range 5-19). After various treatments, the RAP lesion resolved in 7 patients, in 1 patient the OCT-A depicted decreased flow in the lesion, and 1 patient showed unchanged abnormal blood flow. Monotherapy with intravitreal bevacizumab injections resolved RAP in 1 out of 2 patients. Combined therapy of bevacizumab with PDT resolved RAP in 6 out of 7 patients. CONCLUSIONS OCT-A visualized resolution of abnormal blood flow in 7 out of 9 RAP patients after various short-term treatment sequences. OCT-A may become an important noninvasive monitoring tool for optimizing treatment strategies in RAP patients.
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Affiliation(s)
- Jan H de Jong
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands.,Rotterdam Eye Hospital, Rotterdam, The Netherlands
| | - Boy Braaf
- Institute for Lasers, Life and Biophotonics Amsterdam, Department of Physics and Astronomy, VU University, Amsterdam, The Netherlands
| | - Sankha Amarakoon
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands.,Rotterdam Eye Hospital, Rotterdam, The Netherlands
| | - Maximilian Gräfe
- Institute for Lasers, Life and Biophotonics Amsterdam, Department of Physics and Astronomy, VU University, Amsterdam, The Netherlands
| | - Suzanne Yzer
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands.,Rotterdam Eye Hospital, Rotterdam, The Netherlands
| | | | - Tom Missotten
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands.,Rotterdam Eye Hospital, Rotterdam, The Netherlands
| | - Johannes F de Boer
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands.,Institute for Lasers, Life and Biophotonics Amsterdam, Department of Physics and Astronomy, VU University, Amsterdam, The Netherlands
| | - Mirjam E J van Velthoven
- Rotterdam Ophthalmic Institute, Rotterdam, The Netherlands, .,Rotterdam Eye Hospital, Rotterdam, The Netherlands,
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Abstract
PURPOSE To investigate the utility of optical coherence tomography angiography (OCTA) for detecting pathologic vascularization within pigment epithelial detachments (PEDs). METHODS This was a retrospective, cross-sectional, consecutive case series. Multimodal imaging (structural OCT, fluorescein, and indocyanine green angiography) was used as the gold standard to classify PEDs as nonvascularized or vascularized. Optical coherence tomography angiography imaging of the PED was subsequently and independently evaluated to classify PEDs as vascularized or nonvascularized. Specifically, OCTA images were evaluated for the presence of abnormal flow on cross-sectional OCTA and the presence of a vascular complex on en face OCTA. Comparisons between OCTA and the gold standard were determined. RESULTS Sixty-four eyes of 49 patients were evaluated. A total of 18 eyes were classified as nonvascularized PED, and 46 eyes were classified as vascularized PED using the gold standard. Optical coherence tomography angiography was found to have a sensitivity of 76%, specificity of 61%, positive predictive value of 83%, and negative predictive value of 50% for detecting vascularized PEDs. False positive cases in the nonvascularized PED group were due to projection or flow artifacts from hyperreflective material overlying the PED. False negative cases were seen in eyes with minimal exudation on structural OCT and also those manifesting retinal pigment epithelial tears. CONCLUSION Our proposed two-step approach of OCTA interpretation, first using cross-sectional OCTA and then en face OCTA, may allow the detection of vascularization within PEDs and, in some cases, reduce the need for conventional angiography. Increased awareness about potential artifacts and limitations of OCTA may help clinicians interpret OCTA more accurately.
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McClintic SM, Gao S, Wang J, Hagag A, Lauer AK, Flaxel CJ, Bhavsar K, Hwang TS, Huang D, Jia Y, Bailey ST. Quantitative Evaluation of Choroidal Neovascularization under Pro Re Nata Anti-Vascular Endothelial Growth Factor Therapy with OCT Angiography. Ophthalmol Retina 2018; 2:931-941. [PMID: 30238069 PMCID: PMC6139650 DOI: 10.1016/j.oret.2018.01.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
PURPOSE To use optical coherence tomography angiography (OCTA) derived quantitative metrics to assess the response of choroidal neovascularization to pro-re-nata (PRN) anti-endothelial growth factor (anti-VEGF) treatment in neovascular age-related macular degeneration (AMD). DESIGN Prospective longitudinal cohort study. PARTICIPANTS Fourteen eyes from 14 study participants with treatment-naïve neovascular AMD were enrolled. METHODS Subjects were evaluated monthly and treated with intravitreal anti-VEGF agents under a PRN protocol for one year. At each visit, two 3×3 mm2 OCTA scans were obtained. Custom image processing was applied to segment the outer retinal slab, suppress projection artifact, and automatically detect CNV. CNV membrane area (mm2) and CNV vessel area (mm2) was calculated. MAIN OUTCOMES Individual and mean CNV membrane area and CNV vessel area at each visit; within-visit repeatability determined by coefficient of variation. RESULTS Eight eyes had entire CNV within 3×3 mm2 scanning area and had adequate image quality for CNV quantification. One case (case #2) was excluded from analysis due to the presence of a large subretinal hemorrhage overlying the CNV membrane. In the remaining cases, CNV vessel area was reduced by 39%, 50%, 43%, and 41% at months 1, 3, 6, and 12 respectively. CNV membrane area was reduced by 39%, 51%, 54%, and 45% at months 1, 3, 6, and 12. At month 6, mean change from baseline was not statistically significant for CNV vessel area, while it was statistically significant for CNV membrane area. Neither metric was significantly different compared to baseline at month 12. Individual analyses revealed each CNV had a unique response under PRN treatment. Within-visit repeatability was was 7.96% (coefficient of variation) for CNV vessel area and 7.37% for CNV membrane area. CONCLUSIONS In this small exploratory study of CNV response to PRN anti-VEGF treatment, both CNV vessel area and membrane area were reduced compared to baseline after three months. After one year of follow-up, these reductions were no longer statistically significant. When anti-VEGF treatment was held, increasing CNV vessel area over time often resulted in exudation, but it was not possible to exactly when exudation occurs.
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Affiliation(s)
- Scott M McClintic
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Simon Gao
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Jie Wang
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Ahmed Hagag
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Andreas K Lauer
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Christina J Flaxel
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Kavita Bhavsar
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Thomas S Hwang
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - David Huang
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Yali Jia
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Steven T Bailey
- Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
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Öztaş Z, Menteş J. Retinal Angiomatous Proliferation: Multimodal Imaging Characteristics and Follow-up with Eye-Tracked Spectral Domain Optical Coherence Tomography of Precursor Lesions. Turk J Ophthalmol 2018; 48:66-69. [PMID: 29755818 PMCID: PMC5938478 DOI: 10.4274/tjo.03780] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 09/11/2017] [Indexed: 12/01/2022] Open
Abstract
Objectives: To present the multimodal imaging characteristics of precursor retinal angiomatous proliferation (RAP) lesions and follow-up results with eye-tracked spectral-domain optical coherence tomography (SD-OCT). Materials and Methods: Six eyes of 6 patients aged 77.5±5.9 years diagnosed with precursor RAP lesion were included in this prospective observational case series. Best corrected visual acuity (BCVA) measurement and complete ophthalmologic examination were performed for all subjects, as well as fundus photography (FP), fundus autofluorescence (FAF), SD-OCT, fluorescein angiography (FA), indocyanine green angiography (ICGA), optical coherence tomography angiography (OCTA), and their long-term follow-up results are presented. Results: The mean BCVA was 0.8±0.16 (0.6-1) Snellen and the mean follow-up was 26.3±14.8 months. Images of the precursor RAP lesions demonstrated no specific findings on FP and FAF, showed focal hypofluorescent foci with no leakage on FA and IGA, and appeared as extrafoveal small, round, well-defined, hyperreflective foci typically located in the outer retinal layers on SD-OCT B-scans with high sampling density. OCTA demonstrated the precursor lesions as the deep capillary plexus abnormalities in 3 eyes. Two eyes progressed to stage 1 RAP during the follow-up period. Conclusion: This study defined the diagnostic characteristics and clinical course of precursor RAP lesions. Our findings highlight the importance of B-scans with high sampling density for the diagnosis of precursor lesions and using eye-tracking mode SD-OCT during follow-up.
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Affiliation(s)
- Zafer Öztaş
- Ege University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey
| | - Jale Menteş
- Ege University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey
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Imaging of Exudative Age-Related Macular Degeneration: Toward a Shift in the Diagnostic Paradigm? Retina 2018; 37:1625-1629. [PMID: 28463905 DOI: 10.1097/iae.0000000000001695] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Tan ACS, Tan GS, Denniston AK, Keane PA, Ang M, Milea D, Chakravarthy U, Cheung CMG. An overview of the clinical applications of optical coherence tomography angiography. Eye (Lond) 2018; 32:262-286. [PMID: 28885606 PMCID: PMC5811700 DOI: 10.1038/eye.2017.181] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 07/15/2017] [Indexed: 12/15/2022] Open
Abstract
Optical coherence tomography angiography (OCTA) has emerged as a novel, non-invasive imaging modality that allows the detailed study of flow within the vascular structures of the eye. Compared to conventional dye angiography, OCTA can produce more detailed, higher resolution images of the vasculature without the added risk of dye injection. In our review, we discuss the advantages and disadvantages of this new technology in comparison to conventional dye angiography. We provide an overview of the current OCTA technology available, compare the various commercial OCTA machines technical specifications and discuss some future software improvements. An approach to the interpretation of OCTA images by correlating images to other multimodal imaging with attention to identifying potential artefacts will be outlined and may be useful to ophthalmologists, particularly those who are currently still unfamiliar with this new technology. This review is based on a search of peer-reviewed published papers relevant to OCTA according to our current knowledge, up to January 2017, available on the PubMed database. Currently, many of the published studies have focused on OCTA imaging of the retina, in particular, the use of OCTA in the diagnosis and management of common retinal diseases such as age-related macular degeneration and retinal vascular diseases. In addition, we describe clinical applications for OCTA imaging in inflammatory diseases, optic nerve diseases and anterior segment diseases. This review is based on both the current literature and the clinical experience of our individual authors, with an emphasis on the clinical applications of this imaging technology.
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Affiliation(s)
- A C S Tan
- Singapore National Eye Center, Singapore Eye Research Institute, Singapore, Singapore
- Singapore Eye Research Institute, Singapore Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - G S Tan
- Singapore National Eye Center, Singapore Eye Research Institute, Singapore, Singapore
- Singapore Eye Research Institute, Singapore Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - A K Denniston
- Department of Ophthalmology, University Hospitals of Birmingham NHS Foundation Trust, Birmingham, UK
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
- National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK
| | - P A Keane
- National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK
| | - M Ang
- Singapore National Eye Center, Singapore Eye Research Institute, Singapore, Singapore
- Singapore Eye Research Institute, Singapore Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - D Milea
- Singapore National Eye Center, Singapore Eye Research Institute, Singapore, Singapore
- Singapore Eye Research Institute, Singapore Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - U Chakravarthy
- Department of Ophthalmology, Queen's University of Belfast, Royal Victoria Hospital, Belfast, Northern Ireland
| | - C M G Cheung
- Singapore National Eye Center, Singapore Eye Research Institute, Singapore, Singapore
- Singapore Eye Research Institute, Singapore Singapore
- Duke-NUS Medical School, Singapore, Singapore
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Optical coherence tomography angiography: a review of current and future clinical applications. Graefes Arch Clin Exp Ophthalmol 2018; 256:237-245. [DOI: 10.1007/s00417-017-3896-2] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/20/2017] [Accepted: 12/28/2017] [Indexed: 10/18/2022] Open
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Li M, Dolz-Marco R, Messinger JD, Wang L, Feist RM, Girkin CA, Gattoussi S, Ferrara D, Curcio CA, Freund KB. Clinicopathologic Correlation of Anti-Vascular Endothelial Growth Factor-Treated Type 3 Neovascularization in Age-Related Macular Degeneration. Ophthalmology 2017; 125:276-287. [PMID: 28964579 DOI: 10.1016/j.ophtha.2017.08.019] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/13/2017] [Accepted: 08/15/2017] [Indexed: 02/08/2023] Open
Abstract
PURPOSE To correlate histologic results with previously recorded multimodal imaging results from a patient with type 3 neovascularization secondary to age-related macular degeneration (AMD). DESIGN Case study, clinical imaging, laboratory imaging, and eye-tracked clinicopathologic correlation. PARTICIPANT An 86-year-old white woman with type 3 neovascularization secondary to AMD treated with 6 intravitreal injections of bevacizumab. METHODS Multimodal retinal imaging at each clinic visit was correlated with ex vivo and high-resolution histologic images of the preserved donor eye. Clinical imaging included serial near-infrared reflectance and eye-tracked spectral-domain OCT. Eye tracking, applied to the donor eye, enabled identification of histologic features corresponding to clinical OCT signatures. MAIN OUTCOME MEASURES Histologic correlates for clinical OCT signatures were sought, including reflectivity of the vascular complex, intraretinal hyperreflective foci and intraretinal cellularity, analysis of the topography of pathologic features, and evaluation of the sub-retinal pigment epithelium (RPE) plus basal lamina (BL) space. RESULTS Clinical imaging showed a deep neovascular lesion in close relationship with a mixed serous and drusenoid pigment epithelium detachment (PED), characteristic of type 3 neovascularization. Antiangiogenic therapy achieved a complete resolution of exudation. The PED progressively flattened with each treatment, leaving a persistent triangular hyperreflectivity in the outer retina. This persistent deep lesion histologically correlated with a vascular complex implanted into sub-RPE basal laminar deposit. No connection between the choriocapillaris and the sub-RPE plus BL space was observed. Both RPE-derived and lipid-filled cells were correlated with clinical intraretinal hyperreflective foci. The sub-RPE plus BL space contained macrophages, lymphocytes, Müller cell processes, and subducted RPE. CONCLUSIONS Clinicopathologic correlation of type 3 neovascularization showed vascular elements of retinal origin accompanied by collagenous material and Müller cell processes implanting into thick sub-RPE basal laminar deposit, which may simulate the appearance of chorioretinal anastomosis. Surrounding RPE-derived and lipid-filled cells thought to be microglia correlated with clinical intraretinal hyperreflective foci.
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Affiliation(s)
- Miaoling Li
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Rosa Dolz-Marco
- Vitreous Retina Macula Consultants of New York, New York, New York; LuEsther T. Mertz Retinal Research Center, Manhattan Eye, Ear and Throat Hospital, New York, New York; FISABIO Ophthalmology Medicine, Valencia, Spain
| | - Jeffrey D Messinger
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Lan Wang
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Richard M Feist
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; Retina Consultants of Alabama, Birmingham, Alabama
| | - Christopher A Girkin
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Sarra Gattoussi
- Vitreous Retina Macula Consultants of New York, New York, New York; LuEsther T. Mertz Retinal Research Center, Manhattan Eye, Ear and Throat Hospital, New York, New York
| | | | - Christine A Curcio
- Department of Ophthalmology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - K Bailey Freund
- Vitreous Retina Macula Consultants of New York, New York, New York; LuEsther T. Mertz Retinal Research Center, Manhattan Eye, Ear and Throat Hospital, New York, New York; Department of Ophthalmology, New York University School of Medicine, New York, New York.
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Kashani AH, Chen CL, Gahm JK, Zheng F, Richter GM, Rosenfeld PJ, Shi Y, Wang RK. Optical coherence tomography angiography: A comprehensive review of current methods and clinical applications. Prog Retin Eye Res 2017; 60:66-100. [PMID: 28760677 PMCID: PMC5600872 DOI: 10.1016/j.preteyeres.2017.07.002] [Citation(s) in RCA: 584] [Impact Index Per Article: 83.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 07/20/2017] [Accepted: 07/24/2017] [Indexed: 02/06/2023]
Abstract
OCT has revolutionized the practice of ophthalmology over the past 10-20 years. Advances in OCT technology have allowed for the creation of novel OCT-based methods. OCT-Angiography (OCTA) is one such method that has rapidly gained clinical acceptance since it was approved by the FDA in late 2016. OCTA images are based on the variable backscattering of light from the vascular and neurosensory tissue in the retina. Since the intensity and phase of backscattered light from retinal tissue varies based on the intrinsic movement of the tissue (e.g. red blood cells are moving, but neurosensory tissue is static), OCTA images are essentially motion-contrast images. This motion-contrast imaging provides reliable, high resolution, and non-invasive images of the retinal vasculature in an efficient manner. In many cases, these images are approaching histology level resolution. This unprecedented resolution coupled with the simple, fast and non-invasive imaging platform have allowed a host of basic and clinical research applications. OCTA demonstrates many important clinical findings including areas of macular telangiectasia, impaired perfusion, microaneurysms, capillary remodeling, some types of intraretinal fluid, and neovascularization among many others. More importantly, OCTA provides depth-resolved information that has never before been available. Correspondingly, OCTA has been used to evaluate a spectrum of retinal vascular diseases including diabetic retinopathy (DR), retinal venous occlusion (RVO), uveitis, retinal arterial occlusion, and age-related macular degeneration among others. In this review, we will discuss the methods used to create OCTA images, the practical applications of OCTA in light of invasive dye-imaging studies (e.g. fluorescein angiography) and review clinical studies demonstrating the utility of OCTA for research and clinical practice.
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Affiliation(s)
- Amir H Kashani
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of University of Southern California; Los Angeles, CA 90033, United States.
| | - Chieh-Li Chen
- Department of Biomedical Engineering, University of Washington Seattle, Seattle, WA 98195, United States
| | - Jin K Gahm
- Laboratory of Neuro Imaging (LONI), USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of University of Southern California, Los Angeles, CA 90033, United States
| | - Fang Zheng
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Grace M Richter
- USC Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine of University of Southern California; Los Angeles, CA 90033, United States
| | - Philip J Rosenfeld
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami Miller School of Medicine, Miami, FL 33136, United States
| | - Yonggang Shi
- Laboratory of Neuro Imaging (LONI), USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine of University of Southern California, Los Angeles, CA 90033, United States
| | - Ruikang K Wang
- Department of Biomedical Engineering, University of Washington Seattle, Seattle, WA 98195, United States
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Curcio CA, Zanzottera EC, Ach T, Balaratnasingam C, Freund KB. Activated Retinal Pigment Epithelium, an Optical Coherence Tomography Biomarker for Progression in Age-Related Macular Degeneration. Invest Ophthalmol Vis Sci 2017; 58:BIO211-BIO226. [PMID: 28785769 PMCID: PMC5557213 DOI: 10.1167/iovs.17-21872] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Purpose To summarize and contextualize recent histology and clinical imaging publications on retinal pigment epithelium (RPE) fate in advanced age-related macular degeneration (AMD); to support RPE activation and migration as important precursors to atrophy, manifest as intraretinal hyperreflective foci in spectral-domain optical coherence tomography (SDOCT). Methods The Project MACULA online resource for AMD histopathology was surveyed systematically to form a catalog of 15 phenotypes of RPE and RPE-derived cells and layer thicknesses in advanced disease. Phenotypes were also sought in correlations with clinical longitudinal eye-tracked SDOCT and with ex vivo imaging–histopathology correlations in geographic atrophy (GA) and pigment epithelium detachments (PED). Results The morphology catalog suggested two main pathways of RPE fate: basolateral shedding of intracellular organelles (apparent apoptosis in situ) and activation with anterior migration. Acquired vitelliform lesions may represent a third pathway. Migrated cells are packed with RPE organelles and confirmed as hyperreflective on SDOCT. RPE layer thickening due to cellular dysmorphia and thick basal laminar deposit is observed near the border of GA. Drusenoid PED show a life cycle of slow growth and rapid collapse preceded by RPE layer disruption and anterior migration. Conclusions RPE activation and migration comprise an important precursor to atrophy that can be observed at the cellular level in vivo via validated SDOCT. Collapse of large drusen and drusenoid PED appears to occur when RPE death and migration prevent continued production of druse components. Data implicate excessive diffusion distance from choriocapillaris in RPE death as well as support a potential benefit in targeting drusen in GA.
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Affiliation(s)
- Christine A Curcio
- Department of Ophthalmology, University of Alabama School of Medicine, Birmingham, Alabama, United States
| | - Emma C Zanzottera
- Eye Clinic, Department of Clinical Science "Luigi Sacco," Sacco Hospital, University of Milan, Milan, Italy
| | - Thomas Ach
- University Hospital Würzburg, Department of Ophthalmology, Würzburg, Germany
| | - Chandrakumar Balaratnasingam
- Center for Ophthalmology and Visual Sciences, Lions Eye Institute, University of Western Australia, Perth, Australia.,Sir Charles Gairdner Hospital, Perth, Australia
| | - K Bailey Freund
- Department of Ophthalmology, University of Alabama School of Medicine, Birmingham, Alabama, United States.,Eye Clinic, Department of Clinical Science "Luigi Sacco," Sacco Hospital, University of Milan, Milan, Italy.,University Hospital Würzburg, Department of Ophthalmology, Würzburg, Germany.,Center for Ophthalmology and Visual Sciences, Lions Eye Institute, University of Western Australia, Perth, Australia.,Sir Charles Gairdner Hospital, Perth, Australia.,Vitreous Retina Macula Consultants of New York, New York, New York, United States.,LuEsther T. Mertz Retinal Research Center, Manhattan Eye, Ear, and Throat Institute, New York, New York, United States.,Department of Ophthalmology, New York University Langone School of Medicine, New York, New York, United States
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