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Dorna Yazdan Panah , Mohammad Arish ,
Volume 82, Issue 9 (12-2024)
Abstract

Background: The thickness of the lamina, especially the lamina cribrosa and prelamina, can be important indicators of optic nerve damage and the severity of glaucoma. Changes in the thickness of these tissues after treatment can indicate improvement or reduction in intraocular pressure (ICP) and nerve protection. ICP produces a different response in the treatment of patients with closed-angle glaucoma (CAG) and open-angle glaucoma (OAG). The aim of this study was to compare the thickness of prelamina and lamina cribrosa tissue before and after treatment in CAG and OAG patients.
Methods: The present study is a descriptive-analytical study conducted on 56 glaucoma patients referred to an Al Zahra Eye Hospital (Zahedan) who had undergone trabeculectomy or laser iridotomy treatment from April to March 2022. Patients were divided into two equal groups, including CAG patients (n=28) and OAG patients (n=28), and at the beginning of the study, in terms of demographic variables, visual acuity, ratio of cup diameter to disc size (C/D), anterior segment depth (ACD), central corneal thickness (CCT), intraocular pressure (IOP) and prelamina and lamina cribrosa tissue thickness were investigated. the thickness of the lamina cribrosa tissue was measured as the distance between the anterior and posterior borders of the highly reflective area in the EDI-OCT horizontal section at the optic nerve head. The measurement of the thickness of the lamina cribrosa tissue was also measured to the extent of safety in the center where there were less vessels. Then CAG patients underwent laser iridotomy and OAG patients underwent trabeculectomy surgery. Before the treatment and after 1 month, 3 months and 6 months after the treatment, the patients underwent FU with the help of ONH OCT and the thickness of the prelamina and lamina cribrosa tissue was checked.
Results: After 6 months, the thickness of the lamina cribrosa in patients with CAG increased from 160.21 ± 30.21 µm to 201.73 ± 40.07 µm, and in the OAG group, it increased from 173.71 ± 39 µm to 182.86 ± 46.39 µm. The thickness of the prelamina tissue in patients with CAG increased from 155.46 ± 42.14 µm to 170.03 ± 35.31 µm, and in the OAG group, it increased from 172.57 ± 41.91 µm to 180.07 ± 32.06 µm (P<0.05 for all). Before treatment, the thickness of the prelamina tissue and the lamina cribrosa in patients with CAG was significantly less than in patients with OAG (P<0.05). After 6 months, the lamina cribrosa thickness in patients with CAG (201.73 ± 40.07 µm) was significantly greater than in patients with OAG (182.86 ± 46.39 µm) (P= 0.023).
Conclusion: The increase in the thickness of prelamina tissue and lamina cribrosa tissue after surgery in CAG and OAG patients using OCT imaging is different and the amount of increase in the thickness of lamina cribrosa tissue is more in CAG patients.

Zakieh Vahedian Ardakani , Mehran Zarei-Ghanavati , Hamid Riazi-Esfahani , Seyed Mehdi Tabatabaei , Mohammad Reza Mehrabi Bahar, Sadegh Ghafarian, Ahmad Masoomi,
Volume 83, Issue 1 (4-2025)
Abstract

Artificial intelligence (AI) has emerged as a transformative force in modern medicine, with ophthalmology standing at the forefront of its clinical integration. Among ophthalmic disorders, glaucoma—a leading cause of irreversible blindness worldwide—presents unique opportunities and challenges for AI-based solutions due to its chronic, progressive nature and reliance on multimodal data, including structural and functional assessments. This review article offers a comprehensive synthesis of the current and emerging roles of AI in the detection, monitoring, and management of glaucoma. AI algorithms, particularly deep learning and machine learning models, have demonstrated exceptional capabilities in interpreting fundus photographs, optical coherence tomography (OCT) images, and visual field data to identify glaucomatous damage. These systems often approach or even exceed the diagnostic performance of human experts. Moreover, AI has shown significant promise in facilitating large-scale population-based screening, improving early detection rates, and addressing disparities in access to subspecialty care, particularly in low-resource and remote settings. In the monitoring of disease progression, AI tools are being developed to detect subtle structural or functional changes over time, predict future visual outcomes, and support more precise and individualized treatment decisions. Despite these advancements, the widespread clinical adoption of AI in glaucoma care faces several critical barriers. Key limitations include poor generalizability of models across diverse populations, imaging devices, and clinical settings; scarcity of well-annotated, high-quality, and demographically representative datasets; and a lack of transparency and interpretability in algorithmic decision-making—commonly referred to as the “black box” problem. Ethical concerns, regulatory uncertainty, integration challenges within existing healthcare infrastructures, and medico-legal accountability also require thoughtful resolution before AI can be reliably deployed in clinical practice. This review critically evaluates the strengths, limitations, and real-world potential of AI technologies in glaucoma. It provides clinicians, researchers, and healthcare policymakers with a balanced and up-to-date perspective, highlighting promising avenues for future research, including explainable AI, federated learning, multi-modal data integration, and longitudinal validation studies. By fostering a deeper understanding of both the opportunities and challenges associated with AI, this article aims to guide the responsible, equitable, and evidence-based integration of AI into comprehensive glaucoma care.


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