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KMID : 0360220210620040496
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Journal of the Korean Ophthalmological Society
2021 Volume.62 No. 4 p.496 ~ p.506
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Early Retinal Hemorrhage Absorption Rate and Long Term Clinical Outcomes in Branch Retinal Vein Occlusion
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Kim Young-Bin
Lee Chan-Ho
Shin Yong-Kyun
Kyung Sung-Eun
Seo Young-Seung
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Abstract
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Purpose: We report the relationship between early retinal hemorrhage absorption rate (RHAR) and long-term clinical outcomesassociated with branch retinal vein occlusion (BRVO).
Methods: This retrospective study included 66 eyes with BRVO. We used a grid as a quantitative measurement unit for measuringthe amount of hemorrhage, and calculated the RHAR by measuring variance between sums of the grids. We investigated therelationship of best corrected visual acuity (BCVA), central foveal thickness (CFT), and other long term clinical outcomes withRHAR.
Results: The RHAR in BRVO patients measured 16.46 ± 21.48 Σgrid/time (month). Improvement of BCVA (logMAR) was 0.28 ±0.28 at 12 months, showing statistical significance with the RHAR (p < 0.01). We divided RHAR into two groups by 7.5 Σgrid/month; slow and fast RHAR groups. Improvement of BCVA (logMAR) was 0.16 ± 0.23 in the slow RHAR group, and 0.38 ±0.28 in the fast RHAR group, with statistical significance (p = 0.01). Regression of CFT was 133.12 ± 142.93 μm in the slowRHAR group, and 236.62 ± 131.55 μm in the fast RHAR group, with statistical significance (p < 0.01).
Conclusions: RHAR may be a prognostic factor during follow-up in BRVO patients.
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KEYWORD
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Best corrected visual acuity, Branch retinal vein occlusion, Central foveal thickness, Grid, Retinal hemorrhage absorbing rate
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