Clinical Evaluation for Branch Retinal Vein Occlusion

ABSTRACT

It is known that branch retinal vein occlusion (BRVO) is related with systemic vascular diseases. From January 1987 to December 1990, we experienced 46 patients who were diagnosed as BRVO among 18,057 patients who visited eye department during the same period, We evaluated 29 patients of BRVO who were followed up over 1 year. The incidence of BRVO was 026%. Male were 11(38%) and female were 18(62%), and there were no significant difference in morbidity between male and female. The average age of affected patients was 53 years. The average distance between the disc margin and the site of occlusion was 0.86 disc diameter. The type of BRVO was non-sichemic in 18 patients and that of remainders was ischemic. Most common site of occlusion was the crossing between the first branch of artery and the first branch of vein. The most common systemic disease associated with BRVO was hypertension. The visual prognosis was not affected by the factors including the associated systemic diseases, the type of BRVO and the site of BRVO. However, there was a significant correlation (pprognosis and complications such as cystoid macular edema. vitreous opacity. epiretinal membrane, macular degeneration and macular edema.