AIM: To observe etiology of vitreous hemorrhage caused by retinal vein occlusion and prevention analysis.

METHODS: Totally 50 patients with retinal vein occlusion were randomly divided into treatment group(drug therapy)and combined treatment group(drugs and laser treatment), each 25 cases, the occurrence of vitreous hemorrhage, number of cases, and the restoration of vision were observed.

RESULTS: The number of cases with vitreous hemorrhage in treatment group glass volume blood was significantly higher than that in drug combined with laser photocoagulation group.

CONCLUSION: Pay attention to imaging, drug combined with laser photocoagulation in treatment of vitreous hemorrhage caused by basic-level hospital retinal vein occlusion has obvious prevention effect.