Introduction and aims:The association between primary angle closure disease and RVO is less known. This study shows that primary angle closure can be an independent risk factor for development of RVO and should be borne in mind while evaluating patients with RVO. Gonioscopy should be done in all patients with RVO at presentation. Materials and methods:It is Observational cross sectional study included 50 patients for a period of 18 months of retinal vein occlusions who were diagnosed at retina department and those cases will be considered for further evaluation in Glaucoma department.All cases of retinal vein occlusions (CRVO,BRVO, Hemi retinal VO) are in study. Results:In this study among 50 patients mean age was 49.86 . Among 50 RVO patients 17 primary angle closure diseased patients were found. In this 17 patients 11 females, 6 males. So females are at risk for developing angle closures than males. Among 50 patients 28 BRVO, 20 CRVO, 2 HRVO.Among 28 cases of BRVO in the diseased eye 11 OA without glaucoma, 3 OA with NTG, 4 POAG ,2 PACS ,2 PAC, 6 PACG.Among 20 cases of CRVO in the diseased eye 8 OA without glaucoma ,2 OA with NTG,3 POAG,2 PAC,5 PACG. Among 2 cases of HRVO in the diseased eye 1 OA without glaucoma,1 POAG. In contralateral eye among 28 BRVO 17 OA without glaucoma 1 OA with NTG,2 POAG,4 PAC ,4 PACG were diagnosed, among 20 CRVO 7 OA without glaucoma 6 OA with NTG,1 PACS,4 PAC,2 PACG were diagnosed, among 2 HRVO 1 OA without glaucoma ,1 POAG were diagnosed. Mean AC depth in diseased eye 2.887 mm, in contralateral normal eye mean AC depth was 2.955 mm. So in this study mean AC depth was shallower in affected RVO eye than contralateral normal eye. So in diseased eye (RVO ),cases associated with primary angle closures and not associated with primary angle closure cases there is significant difference in mean ACD which is proved as p value 0.00 (<0.05) which is significant. Conclusions:Contralateral eye also cases associated with primary angle closures and not associated with primary angle closure cases there is significant difference in mean ACD which is proved by p value 0.012 (<0.05) which is significant. So in this study shallow AC depth is one of the risk factor for developing primary angle closure disease.