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KMID : 0390320070170020206
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Chungbuk Medical Journal
2007 Volume.17 No. 2 p.206 ~ p.214
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Cup-to-Dise Ratio, Inraocular Pressure, and Occlusion Site in Branch Retinal Vein Occlusion
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Kim Sang-Kook
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Abstract
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Purpose: To investigate the correlation between cup-to-disc ratio (CDR), intraocular pressure (IOP), and occlusion site in branch retinal vein occlusion (BRVO).
Subjects and Methods: This prospective study involved 62 eyes with a diagnosis of BRVO. Fundus photography, fluorescein angiography, Goldmann applanation tonometry, optical coherence tomography, and visual field testing were performed. Correlations between CDR, IOP, and occlusion site were analyzed. Patients were further divided into two groups depending on the presence (group I) or absence (group II) of glaucoma, and main parameters were compared.
Results: A negative correlation was found between occlusion site and IOP (r=-0.510, p<0.001) and between occlusion site and CDR (r=-0.530, p<0.001). But the correlation between IOP and CDR was poor (r=0.210, p=0.092). Mean IOP was higher (17.00±4.41 mmHg vs 14.11±3.21 mmHg, p=0.005) and occlusion site was nearer to the optic disc (0.33±0.24 DD vs 1.13±0.74 DD, p<0.001) in group I than in group II.
Conclusion: BRVOs with an occlusion site near the optic disc are associated with raised IOP and CDR. This study suggests that the occurrence of BRVO with an occlusion site near the optic disc indicates the need to check for the presence of glaucoma.
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KEYWORD
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Branch retinal vein occlusion, Cup-to-dise ratio, Glaucoma, Inraocular pressure, Occlusion site
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