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Updated: Jul 30, 2025
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Optimization of the Retinal Vein Occlusion Mouse Model to Limit Variability
Published on: August 6, 2021
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Retinal vein occlusion in patients with primary angle closure: a prospective case-control study
Ali Salimi1, Cody Li1, Harrison Watt1
1Department of Ophthalmology and Visual Sciences, Faculty of Medicine, McGill University, Montreal, QC.
Summary
This study found no significant differences in angle closure between eyes with retinal vein occlusion (RVO) and control eyes. However, RVO eyes showed a shallower anterior chamber depth, potentially increasing risk for pupillary block.
Area of Science:
- Ophthalmology
- Retinal Diseases
- Glaucoma
Background:
- Retinal vein occlusion (RVO) is a common retinal vascular disease.
- Angle closure is a condition characterized by reduced or blocked drainage in the eye's anterior chamber.
- The relationship between RVO and angle closure requires further investigation.
Purpose of the Study:
- To compare the prevalence of angle closure in eyes with RVO versus control eyes.
- To assess the potential association between angle closure and RVO.
- To analyze ocular structural differences using anterior-segment optical coherence tomography (AS-OCT).
Main Methods:
- A prospective, blinded, case-control study design.
- Inclusion of 88 patients (44 with RVO, 44 controls) matched for age and refractive error.
- Analysis of clinical characteristics and AS-OCT-derived angle structures.
Main Results:
- No significant differences in intraocular pressure or gonioscopy grading between RVO and control groups.
- No significant differences in AS-OCT-derived angle characteristics.
- A statistically significant shallower anterior chamber depth (ACD) was observed in RVO eyes compared to their contralateral non-RVO eyes.
Conclusions:
- The study did not find evidence of a significant association between primary angle-closure mechanisms and RVO.
- RVO eyes exhibited a shallower ACD, suggesting a potential increased risk for pupillary block glaucoma.
- Further research is warranted to elucidate the implications of shallower ACD in RVO eyes.
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