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Sanie-Jahromi F, Hoseini SS, Nowroozzadeh MH. In-vitro safety assessment of meropenem on human retinal pigment epithelium (RPE). Heliyon 2024; 10:e33916. [PMID: 39092242 PMCID: PMC11292269 DOI: 10.1016/j.heliyon.2024.e33916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 05/29/2024] [Accepted: 06/28/2024] [Indexed: 08/04/2024] Open
Abstract
Purpose Endophthalmitis is a severe infection accompanied by inflammation that affects the anterior and posterior parts of the eye. It is typically treated with a combination of antibiotics that cover various microorganisms. However, retinal pigment epithelium (RPE) cells are highly susceptible to damage from intravitreal injection therapy. This study aimed to investigate the impact of clinically relevant concentrations of meropenem (alone or in combination with vancomycin) on the viability and inflammation of RPE cells. Design In-vitro Study. Methods RPE cells from passages 5-7 were treated with different concentrations of meropenem (1/4x, x, and 4x; [x = 16 mg/L]), vancomycin (30 mg/L), and meropenem (x) plus vancomycin for 24 h. The morphology assessment and MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay were performed to evaluate cytotoxicity due to drug treatment. Real-time PCR was used to measure the relative expression of apoptotic genes (BCL-2 and BAX) and inflammation biomarkers (IL-1b and IL-6). Results Meropenem (alone or in combination with vancomycin) did not have any significant effect on RPE cell morphology, density, and viability. Gene expression analysis confirmed these results, showing no significant changes in the BCL-2/BAX ratio in drug-treated RPE cells compared to controls. Treatment with meropenem significantly induced the expression of IL-1b at all studied concentrations. Additionally, at concentrations of x and 4x, it also significantly increased the expression of IL-6, which was dose-dependent. However, this effect was not observed with vancomycin alone or in combination with meropenem. Conclusions The results of this study suggest that meropenem, either alone or in combination with vancomycin, does not induce RPE cytotoxicity. There was an upregulation of IL-1b and IL-6 in meropenem monotherapy, the clinical implication of which should be elucidated in future in-vivo or clinical studies.
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Affiliation(s)
- Fatemeh Sanie-Jahromi
- Poostchi Ophthalmology Research Center, Department of Ophthalmology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyedeh Shahla Hoseini
- Poostchi Ophthalmology Research Center, Department of Ophthalmology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M. Hossein Nowroozzadeh
- Poostchi Ophthalmology Research Center, Department of Ophthalmology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Zhang CX, Fan B, Chi J, Li YL, Jiao Q, Zhang ZY, Li GY. Differences between long- and short-wavelength light-induced retinal damage and the role of PARP-1 in retinal injury induced by blue light. Exp Eye Res 2024; 244:109946. [PMID: 38815794 DOI: 10.1016/j.exer.2024.109946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/19/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Photobiomodulation (PBM) therapy uses light of different wavelengths to treat various retinal degeneration diseases, but the potential damage to the retina caused by long-term light irradiation is still unclear. This study were designed to detect the difference between long- and short-wavelength light (650-nm red light and 450-nm blue light, 2.55 mW/cm2, reference intensity in PBM)-induced injury. In addition, a comparative study was conducted to investigate the differences in retinal light damage induced by different irradiation protocols (short periods of repeated irradiation and a long period of constant irradiation). Furthermore, the protective role of PARP-1 inhibition on the molecular mechanism of blue light-induced injury was confirmed by a gene knockdown technique or a specific inhibitor through in vitro and in vivo experiments. The results showed that the susceptibility to retinal damage caused by irradiation with long- and short-wavelength light is different. Shorter wavelength lights, such as blue light, induce more severe retinal damage, while the retina exhibits better resistance to longer wavelength lights, such as red light. In addition, repeated irradiation for short periods induces less retinal damage than constant exposure over a long period. PARP-1 plays a critical role in the molecular mechanism of blue light-induced damage in photoreceptors and retina, and inhibiting PARP-1 can significantly protect the retina against blue light damage. This study lays an experimental foundation for assessing the safety of phototherapy products and for developing target drugs to protect the retina from light damage.
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Affiliation(s)
- Chun-Xia Zhang
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Bin Fan
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Jing Chi
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Yu-Lin Li
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Qing Jiao
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Zi-Yuan Zhang
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China
| | - Guang-Yu Li
- Department of Ophthalmology, The Second Norman Bethune Hospital of Jilin University, Changchun, 130000, China.
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Sanyal S, Ravula V. Mitigation of pesticide-mediated ocular toxicity via nanotechnology-based contact lenses: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:46602-46624. [PMID: 37542697 DOI: 10.1007/s11356-023-28904-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 07/17/2023] [Indexed: 08/07/2023]
Abstract
The xenobiotic stress exerted by pesticides leads to the deterioration of human and animal health including ocular health. Acute or prolonged exposure to these agricultural toxicants has been implicated in a number of pathological conditions of the eye such as irritation, epiphora or hyper-lacrimation, abrasions on the ocular surface, and decreased visual acuity. The issue is compounded by the fact that tissues of the eye absorb pesticides faster than other organs of the body and are more susceptible to damage as well. However, there is a lacuna in our knowledge regarding the ways by which pesticide exposure-mediated ocular insult might be counteracted. Topical instillation of drugs known to combat the pesticide induced toxicity has been explored to mitigate the detrimental impact of pesticide exposure. However, topical eye drop solutions exhibit very low bioavailability and limited drug residence duration in the tear film decreasing their efficacy. Contact lenses have been explored in this respect to increase bioavailability of ocular drugs, while nanoparticles have lately been utilized to increase drug bioavailability and increase drug residence duration in different tissues. The current review focuses on drug delivery and futuristic aspects of corneal protection from ocular toxicity using contact lenses.
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Affiliation(s)
- Shalini Sanyal
- Laboratory of Self Assembled Biomaterials and Translational Science, Institute for Stem Cell Science and Regenerative Medicine (DBT-inStem), GKVK Post, Bellary Road, Bengaluru, 560065, Karnataka, India.
| | - Venkatesh Ravula
- Laboratory of Self Assembled Biomaterials and Translational Science, Institute for Stem Cell Science and Regenerative Medicine (DBT-inStem), GKVK Post, Bellary Road, Bengaluru, 560065, Karnataka, India
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Fu M, Chen Y, Yang A. Ochratoxin A induces mitochondrial dysfunction, oxidative stress, and apoptosis of retinal ganglion cells (RGCs), leading to retinal damage in mice. Int Ophthalmol 2024; 44:72. [PMID: 38349605 PMCID: PMC10864473 DOI: 10.1007/s10792-024-03032-w] [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: 06/11/2023] [Accepted: 01/11/2024] [Indexed: 02/15/2024]
Abstract
PURPOSE Ochratoxin A (OTA) contamination of food and feed is a serious problem worldwide. OTA is considered a carcinogen and immunotoxic, nephrotoxic, and neurotoxic mycotoxin. The present study aims to determine the toxic effects of OTA on retinal ganglion cells (RGCs) and assess the resulting impairment of retinal function in mice. METHODS RGC-5 cells were exposed to OTA (100 and 200 μg/L) for 3 days, and the mice were fed OTA-contain (100 and 200 μg/kg) diets for 4 weeks. Antioxidant indices were detected by spectrophotometer. The apoptosis of RGC-5 cells was determined by flow cytometry. Mitochondrial morphology and mitochondrial membrane potential were detected by immunofluorescence. RGC survival was determined by immunofluorescence staining with Brn3a. Flash electroretinography (ERG) was conducted to assess visual function. RESULTS The oxidative-antioxidant balance suggested that OTA-induced severe oxidative stress, including increased reactive oxygen species (ROS) and malondialdehyde (MDA) levels in the OTA-exposed RGC-5 cells, and the reduced activity of superoxide dismutase (SOD) and glutathione-S-transferase (GST) in the OTA exposed group. Furthermore, OTA exposure led to remarkable apoptosis in RGC-5 cells. The mitochondrial detection showed that OTA caused significant mitochondrial membrane potential reduction and mitochondrial fragmentation, which may be the cause of apoptosis of RGC-5 cells. Additionally, in vivo experiments demonstrated that OTA resulted in significant death of RGCs and subsequent retinal dysfunction in mice. CONCLUSION Ochratoxin A induces mitochondrial dysfunction, oxidative stress, and RGCs death in mice.
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Affiliation(s)
- Miao Fu
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yuanyuan Chen
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Anhuai Yang
- Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
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Patskan BM, Beliayev VD, Bora KV, Bondarenko NV. A case of successful treatment of a rare retinal disease presented by interferon-induced retinopathy. WIADOMOSCI LEKARSKIE (WARSAW, POLAND : 1960) 2024; 77:491-496. [PMID: 38691791 DOI: 10.36740/wlek202403117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
OBJECTIVE Aim: To showcase a rare retinal lesion and the results of contemporary diagnostic and treatment of interferon-induced retinopathy. PATIENTS AND METHODS Materials and Methods: We describe a case of a 36-year-old patient with interferon-induced retinopathy, with hepatitis C, that received prolonged interferon treatment. Clinical signs, examination and combined laser and pharmacologic treatment were showcased in the study. RESULTS Results: As a result of pharmacologic and laser treatment, the patient's visual acuity increased from 0.1 to 1.0 through the duration of 3 months after treatment. The patients` condition remained stable under dynamic observation. CONCLUSION Conclusions: Because interferon-induced retinopathy is a rare occurrence in routine ophthalmologic practice, combined laser therapy can be used for treatment of preretinal hemorrhage, which leads to improvement of visual functions and stabilization of the retinal processes. This case is an addition to the few described cases of interferon-induced retinopathy.
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Pikuleva IA. Challenges and Opportunities in P450 Research on the Eye. Drug Metab Dispos 2023; 51:1295-1307. [PMID: 36914277 PMCID: PMC10506698 DOI: 10.1124/dmd.122.001072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 02/14/2023] [Accepted: 03/06/2023] [Indexed: 03/15/2023] Open
Abstract
Of the 57 cytochrome P450 enzymes found in humans, at least 30 have ocular tissues as an expression site. Yet knowledge of the roles of these P450s in the eye is limited, in part because only very few P450 laboratories expanded their research interests to studies of the eye. Hence the goal of this review is to bring attention of the P450 community to the eye and encourage more ocular studies. This review is also intended to be educational for eye researchers and encourage their collaborations with P450 experts. The review starts with a description of the eye, a fascinating sensory organ, and is followed by sections on ocular P450 localizations, specifics of drug delivery to the eye, and individual P450s, which are grouped and presented based on their substrate preferences. In sections describing individual P450s, available eye-relevant information is summarized and concluded by the suggestions on the opportunities in ocular studies of the discussed enzymes. Potential challenges are addressed as well. The conclusion section outlines several practical suggestions on how to initiate eye-related research. SIGNIFICANCE STATEMENT: This review focuses on the cytochrome P450 enzymes in the eye to encourage their ocular investigations and collaborations between P450 and eye researchers.
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Affiliation(s)
- Irina A Pikuleva
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, Ohio
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Kim J, Ryu B, Bang J, Kim CY, Park JH. Postnatal exposure to trimethyltin chloride induces retinal developmental neurotoxicity in mice via glutamate and its transporter related changes. Reprod Toxicol 2023; 119:108395. [PMID: 37164060 DOI: 10.1016/j.reprotox.2023.108395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/26/2023] [Accepted: 05/07/2023] [Indexed: 05/12/2023]
Abstract
Exposure to toxic substances during postnatal period is one of the major factors causing retinal developmental defects. The developmental toxicity of trimethyltin chloride (TMT), a byproduct of an organotin compound widely used in agriculture and industrial fields, has been reported; however, the effect on the mammalian retina during postnatal development and the mechanism have not been elucidated to date. We exposed 0.75 and 1.5 mg/kg of TMT to neonatal ICR mice (1:1 ratio of male and female) up to postnatal day 14 and performed analysis of the retina: histopathology, apoptosis, electrophysiological function, glutamate concentration, gene expression, and fluorescence immunostaining. Exposure to TMT caused delayed eye opening, eye growth defect and thinning of retinal layer. In addition, apoptosis occurred in the retina along with b-wave and spiking activity changes in the micro-electroretinogram. These changes were accompanied by an increase in the concentration of glutamate, upregulation of astrocyte-related genes, and increased expression of glial excitatory amino acid transporter (EAAT) 1 and 2. Conversely, EAAT 3, 4, and 5, mainly located in the neurons, were decreased. Our results are the first to prove postnatal retinal developmental neurotoxicity of TMT at the mammalian model and analyze the molecular, functional as well as morphological aspects to elucidate possible mechanisms: glutamate toxicity with EAAT expression changes. These mechanisms may suggest not only a strategy to treat but also a clue to prevent postnatal retina developmental toxicity of toxic substances.
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Affiliation(s)
- Jin Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Bokyeong Ryu
- Department of Biomedical Informatics, College of Applied Life Sciences, Jeju National University, Jeju, Republic of Korea
| | - Junpil Bang
- Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
| | - Jae-Hak Park
- Laboratory Animal Medicine, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.
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Goździewska E, Wichrowska M, Kocięcki J. Early Optical Coherence Tomography Biomarkers for Selected Retinal Diseases-A Review. Diagnostics (Basel) 2023; 13:2444. [PMID: 37510188 PMCID: PMC10378475 DOI: 10.3390/diagnostics13142444] [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: 06/08/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Optical coherence tomography (OCT) is a non-invasive, easily accessible imaging technique that enables diagnosing several retinal diseases at various stages of development. This review discusses early OCT findings as non-invasive imaging biomarkers for predicting the future development of selected retinal diseases, with emphasis on age-related macular degeneration, macular telangiectasia, and drug-induced maculopathies. Practitioners, by being able to predict the development of many conditions and start treatment at the earliest stage, may thus achieve better treatment outcomes.
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Affiliation(s)
- Ewa Goździewska
- Department of Ophthalmology, Poznan University of Medical Sciences, 60-569 Poznań, Poland
| | - Małgorzata Wichrowska
- Department of Ophthalmology, Poznan University of Medical Sciences, 60-569 Poznań, Poland
- Doctoral School, Poznan University of Medical Sciences, 61-701 Poznań, Poland
| | - Jarosław Kocięcki
- Department of Ophthalmology, Poznan University of Medical Sciences, 60-569 Poznań, Poland
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Fanaro GB, Marques MR, Calaza KDC, Brito R, Pessoni AM, Mendonça HR, Lemos DEDA, de Brito Alves JL, de Souza EL, Cavalcanti Neto MP. New Insights on Dietary Polyphenols for the Management of Oxidative Stress and Neuroinflammation in Diabetic Retinopathy. Antioxidants (Basel) 2023; 12:1237. [PMID: 37371967 PMCID: PMC10295526 DOI: 10.3390/antiox12061237] [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: 04/15/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Diabetic retinopathy (DR) is a neurodegenerative and vascular pathology that is considered one of the leading causes of blindness worldwide, resulting from complications of advanced diabetes mellitus (DM). Current therapies consist of protocols aiming to alleviate the existing clinical signs associated with microvascular alterations limited to the advanced disease stages. In response to the low resolution and limitations of the DR treatment, there is an urgent need to develop more effective alternative therapies to optimize glycemic, vascular, and neuronal parameters, including the reduction in the cellular damage promoted by inflammation and oxidative stress. Recent evidence has shown that dietary polyphenols reduce oxidative and inflammatory parameters of various diseases by modulating multiple cell signaling pathways and gene expression, contributing to the improvement of several chronic diseases, including metabolic and neurodegenerative diseases. However, despite the growing evidence for the bioactivities of phenolic compounds, there is still a lack of data, especially from human studies, on the therapeutic potential of these substances. This review aims to comprehensively describe and clarify the effects of dietary phenolic compounds on the pathophysiological mechanisms involved in DR, especially those of oxidative and inflammatory nature, through evidence from experimental studies. Finally, the review highlights the potential of dietary phenolic compounds as a prophylactic and therapeutic strategy and the need for further clinical studies approaching the efficacy of these substances in DR management.
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Affiliation(s)
- Gustavo Bernardes Fanaro
- Institute of Health and Biotechnology, Federal University of Amazonas, Manaus 69460000, Amazonas, Brazil;
| | | | - Karin da Costa Calaza
- Department of Neurobiology, Institute of Biology, Fluminense Federal University, Niterói 24210201, Rio de Janeiro, Brazil;
| | - Rafael Brito
- Department of Cellular and Molecular Biology, Institute of Biology, Fluminense Federal University, Niterói 24210201, Rio de Janeiro, Brazil;
| | | | - Henrique Rocha Mendonça
- Institute of Biodiversity and Sustainability (NUPEM), Federal University of Rio de Janeiro, Macaé 27965045, Rio de Janeiro, Brazil; (H.R.M.); (M.P.C.N.)
| | | | - José Luiz de Brito Alves
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, João Pessoa 58051900, Paraíba, Brazil; (D.E.d.A.L.); (J.L.d.B.A.)
| | - Evandro Leite de Souza
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, João Pessoa 58051900, Paraíba, Brazil; (D.E.d.A.L.); (J.L.d.B.A.)
| | - Marinaldo Pacífico Cavalcanti Neto
- Institute of Biodiversity and Sustainability (NUPEM), Federal University of Rio de Janeiro, Macaé 27965045, Rio de Janeiro, Brazil; (H.R.M.); (M.P.C.N.)
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Jafarizadeh A, Homaie M, Abdollahi M, Niyousha M. Time course study of optical coherence tomography angiography in patients with methanol induced optic neuropathy. BMC Ophthalmol 2023; 23:178. [PMID: 37098467 PMCID: PMC10126549 DOI: 10.1186/s12886-023-02937-x] [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: 01/07/2023] [Accepted: 04/21/2023] [Indexed: 04/27/2023] Open
Abstract
INTRODUCTION In countries where alcoholic beverages are legally prohibited, methanol toxicity usually occurs due to ingesting homemade alcoholic drinks. The initial ophthalmologic symptoms of methanol toxicity typically appear 6-48 h after ingestion, and the severity of symptoms varies widely from mild and painless decreased vision to no-light perception vision. METHODS This prospective study examines 20 patients with acute methanol poisoning within 10 days of use. Patients underwent ocular examinations, BCVA (Best Corrected Visual Acuity) recording, and OCTA (Optical Coherence Tomography Angiography) of the macula and optic disc. BCVA measurement and imaging were repeated one month and three months after intoxication. RESULTS There was a statistically significant reduction in superficial parafoveal vascular density (P-value = 0.026), inner retinal thickness (P-value = 0.022), RNFL (Retinal Nerve Fiber Layer) thickness (P-value = 0.031), and an increase in cup to disc ratio (P-value < 0.001), and central visual acuity (P-value = 0.002) in this time course. However, there was no statistically significant difference in FAZ (Foveal Avascular Zone) area (P-value = 0.309), FAZ perimeter (P-value = 0.504), FD-300 (Foveal density, vascular density within a 300 μm wide region of the FAZ) (P-value = 0.541), superficial vascular density (P-value = 0.187), deep foveal vascular density (P-value = 0.889), deep parafoveal vascular density (P-value = 0.830), choroidal flow area (P-value = 0.464), total retinal thickness (P-value = 0.597), outer retinal thickness (P-value = 0.067), optic disc whole image vascular density (P-value = 0.146), vascular density inside the disc (P-value = 0.864), or peripapillary vascular density (P-value = 0.680) at different times. CONCLUSION Over time, methanol poisoning can cause changes in retinal layers thickness, vasculature, and optic nerve head. The most important changes include cupping of the optic nerve head, reduction in RNFL thickness, and inner retinal thickness.
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Affiliation(s)
- Ali Jafarizadeh
- Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Homaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mirsaeed Abdollahi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohamadreza Niyousha
- Department of Ophthalmology, Nikookari Eye Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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