Retinal vein occlusion

In general, patients with non-ischaemic RVOs have a better prognosis with good visual outcomes. The risk for development of complications such as conversion to ischaemic status, cystoid macular oedema, or neovascularisation decreases with time since the occlusion first occurred.

Of patients with central retinal vein occlusion (CRVO) in one eye, 1% per year will develop an RVO of any type in the fellow eye, and 7% will develop another CRVO in the fellow eye in a 5-year period.[7]Hayreh SS, Zimmerman MB, Podhajsky P. Incidence of various types of retinal vein occlusion and their recurrence and demographic characteristics. Am J Ophthalmol. 1994 Apr 15;117(4):429-41. http://www.ncbi.nlm.nih.gov/pubmed/8154523?tool=bestpractice.com ​​[9]The Central Vein Occlusion Study Group. Natural history and clinical management of central retinal vein occlusion. Arch Ophthalmol. 1997 Apr;115(4):486-91. [Erratum in: Arch Ophthalmol 1997 Oct;115(10):1275.] http://www.ncbi.nlm.nih.gov/pubmed/9109757?tool=bestpractice.com [10]Hayreh SS. Central retinal vein occlusion. Ophthalmol Clin North Am. 1998 Dec 1;11(4):559-90. http://www.ophthalmology.theclinics.com/article/S0896-1549(05)70079-1/abstract ​​​ Similarly, 10% of patients with branch retinal vein occlusion (BRVO) in one eye may experience an RVO of any type in a 3-year period.