Scientific Poster

Choroid Thickness Changes in Branch Retinal Vein Occlusion with Macular Edema by Kwang Soo Kim, South Korea

Kwang Soo Kim, South Korea

Purpose:
To evaluate the choroid thickness change in branch retinal vein occlusion (BRVO) patients with macular edema.

Methods:
This retrospective study was performed in 29 treatment-naïve patients with unilateral BRVO involving major retinal vein. All eyes showed thick macular edema at initial visit and followed up for at least 12 months.  Routine ophthalmic examinations were done and the central macular thickness (CMT) and choroid thickness (CT) were measured
using swept source optical coherence tomography (OCT) at every visit. The CT was acquired using vertical line scan across the fovea at four hemispheres of both eyes. The CT changes were compared among the lesion site and others at 4 months and 12 months after first visit by paired t-test.

Results:
BCVA and CMT was significant improved with anti-VEGF treatment on last follow-up. At first visit, there was no significant difference in the CT among four areas. At 4 months follow-up, CT of the lesion site showed significant difference than in the opposite site of same eye (p=0.007). In subgroup analysis, only superotemporal BRVO had significantly thicker superior and inferior CT than at first visit (p=0.006, p=0.000). During initial 4months, Eyes that required only 1~2 injections showed thinner CT than first visit. However the other eyes that got more than 3 time injection had thicker CT than first visit. At 12 months follow-up, CT of the lesion site was decreased and showed no significantly difference in comparison with first visit.

Conclusions:
Even though the CT in eyes with BRVO-CME showed no significant difference in acute phase, with time, choroid thickness under the affected lesion was getting thicker, especially in superotemporal BRVO with recurrent macular edema. These results show that t
here may be a close relation between choroid thickness and recurrence macular edema in BRVO. 

Contact Details:
Kwang Soo Kim
Keimyung University Dongsan Medical Center
South Korea
Cell Phone : 821045089676
Work Phone : 82532507706
Email : kimks@dsmc.or.kr