We performed a prospective study in order to elucidate the predisposin
g role of axial length and hyperopia in retinal vein occlusions. The s
tudy group comprised 39 patients with unilateral central retinal vein
occlusion (CRVO), 50 patients with unilateral branch retinal vein occl
usion (BRVO), 13 patients with unilateral hemispheric retinal vein occ
lusion (HRVO) and 45 control eyes. The axial length of affected eyes w
as compared to fellow eyes and control eyes in each subgroup of patien
ts with retinal vein occlusion. No statistical difference was noted fo
r any of the subgroups (p > 0.05). Hyperopia was detected in 12 of 39
eyes (31%) with CRVO, 14 of 50 eyes (28%) with BRVO, 4 of 13 eyes (31%
) with HRVO and 15 of 45 eyes (33%) in the control group. No statistic
ally significant difference was discovered (p > 0.05). In the light of
our study, we believe that axial length and hyperopia may not be risk
factors in retinal vein occlusions, in contrast to common belief.