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Luo S, Holland G, Khazaeinezhad R, Bradford S, Joshi R, Juhasz T. Iridocorneal angle imaging of a human donor eye by spectral-domain optical coherence tomography. Sci Rep 2023; 13:13861. [PMID: 37620338 PMCID: PMC10449890 DOI: 10.1038/s41598-023-37248-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 06/19/2023] [Indexed: 08/26/2023] Open
Abstract
Iridocorneal angle (ICA) details particularly the trabecular meshwork (TM), Schlemm's canal (SC), and collector channels (CCs) play crucial roles in the regulation of the aqueous outflow in the eyes and are closely associated with glaucoma. Current clinical gonioscopy imaging provides no depth information, and studies of 3D high-resolution optical coherence tomography (OCT) imaging of these structures are limited. We developed a custom-built spectral-domain (SD-) OCT imaging system to fully characterize the angle details. Imaging of a human cadaver eye reveals the visibility of details in the TM/SC/CC region via a 'crossline' scanning and a series of image processing. This shows that ICA imaging can be used for preoperative glaucoma inspections in the clinical setting with the proposed prototype.
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Affiliation(s)
- Shangbang Luo
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
- Department of Ophthalmology, University of California, Irvine, Irvine, CA, 92697, USA
| | | | | | - Samantha Bradford
- Department of Ophthalmology, University of California, Irvine, Irvine, CA, 92697, USA
| | - Rohan Joshi
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA
- Department of Ophthalmology, University of California, Irvine, Irvine, CA, 92697, USA
| | - Tibor Juhasz
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697, USA.
- Department of Ophthalmology, University of California, Irvine, Irvine, CA, 92697, USA.
- ViaLase Inc., Aliso Viejo, CA, 92656, USA.
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MESEN S, OZER MD, KEBAPCI F, BATUR M. Comparison of Both Eyes Anterior Segment Structures of Patients with Unilateral Blunt Trauma. Photodiagnosis Photodyn Ther 2023; 42:103541. [PMID: 37004835 DOI: 10.1016/j.pdpdt.2023.103541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND To evaluate anterior segment optical coherence tomography (AS-OCT) data in patients with unilateral blunt ocular trauma (BOT), to determine the relationship of results with hyphema development METHODS: 21 patients who received unilateral BOT were included in the study. Healthy eyes of patients were included in the control group. Iris stromal thickness (IST), schlemm canal area (SCA) and pupil diameter were measured by AS-OCT of the participants. In addition, eyes with ocular trauma were divided into those with and without hyphema and compared in terms of these parameters. RESULTS The mean nasal and temporal (n-t) IST was measured as 373± 40 µm and 369 ± 35 µm in BOT in comparison with 344 ± 35 µm and 335 ± 36 µm in control eyes, respectively (p = 0.000 and p = 0.001, respectively). The mean nasal and temporal (n-t) SCA was measured as 12,571 ± 880 µm2 and 12,162 ± 1,181 µm2 in developed hyphema in comparison with 10,455 ± 1,506 µm2 and 10,188 ± 939 µm2 in did not develop hyphema, respectively (p = 0.016 and p = 0.002 respectively). CONCLUSION The ISTs of the traumatized eyes in the nasal and temporal quadrants were statistically thicker than the other healthy eyes. SCA in both nasal and temporal quadrants of eyes with hyphema was statistically significantly larger than the group without hyphema.
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Cheng H, Ye W, Zhang S, Xie Y, Gu J, Le R, Deng Y, Hu C, Zhao Z, Ke Z, Liang Y. Clinical outcomes of penetrating canaloplasty in patients with traumatic angle recession glaucoma: a prospective interventional case series. Br J Ophthalmol 2022:bjophthalmol-2021-320659. [PMID: 35318223 DOI: 10.1136/bjophthalmol-2021-320659] [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: 10/20/2021] [Accepted: 03/06/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND/AIM To evaluate the clinical outcomes of penetrating canaloplasty in traumatic angle recession glaucoma at 1 year. METHODS Patients with angle recession glaucoma underwent penetrating canaloplasty, a new Schlemm's canal-based internal drainage procedure, which creates a direct canal for flow of aqueous humour from the anterior chamber to the ostia of Schlemm's canal via a window created at the corneal scleral bed without use of antimetabolites. Postoperative intraocular pressure (IOP), number of glaucoma medications, and procedure-related complications were evaluated. Success was defined as an IOP ≤21 mm Hg without (complete) or with (qualified) use of glaucoma medication. RESULTS Forty eyes in 40 patients with angle recession glaucoma underwent successful circumferential catheterisation. The mean patient age was 42±13 years. In patients with penetrating canaloplasty that was deemed to be completely successful, the mean IOP decreased from a preoperative value of 37.8±12.3 mm Hg on 3.3±1.2 anti-glaucoma medications to 18.5±6.4 mm Hg on 1.2±1.4 medications, 14.9±4.6 mm Hg on 0.1±0.5 medications, 15.7±5.4 mm Hg on 0.1±0.4 medications and 14.8±3.6 mm Hg on 0.1±0.5 medications at 1, 3, 6 and 12 months postoperatively (p<0.05). Complete success was achieved in 35/40 eyes (87.5%) at 6 months and in 34/38 (89.5%) at 12 months. Hyphema (18/40, 45.0%) and transient IOP elevation (≥30 mm Hg, 9/40, 22.5%) were the most common postoperative complications. CONCLUSION Penetrating canaloplasty significantly reduces IOP and has a high success rate in angle recession glaucoma. TRIAL REGISTRATION NUMBER ChiCTR1900020511.
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Affiliation(s)
- Huanhuan Cheng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wenqing Ye
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China.,Institute of Glaucoma, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Shaodan Zhang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China.,Institute of Glaucoma, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yanqian Xie
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China.,Institute of Glaucoma, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Juan Gu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Rongrong Le
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China.,Institute of Glaucoma, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yuxuan Deng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Cheng Hu
- Department of Ophthalmology, Wuhan General Hospital of Guangzhou Command, Wuhan, Hubei, China
| | - Zhenquan Zhao
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China
| | - Zhisheng Ke
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China
| | - Yuanbo Liang
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China .,National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China.,Institute of Glaucoma, Wenzhou Medical University, Wenzhou, Zhejiang, China
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