Association of Branch Retinal Vein Occlusion with Angiograph
A Study was conducted to examine the angiographic risk factors for the recurrence of macular edema associated with branch retinal vein occlusion.

Researchers consisted of 51 retinal vein occlusions of the macular area including treatment-naive branches. At first, every eye received three monthly injections of ranibizumab with additional injections as necessary. At Month 3, parafoveal vascular diameter (VDI) indices were reviewed and the relationship of injections with ranibizumab through the twelve months was assessed in all sectors using the Optical Coherence Tomography Angiography (month 3–month5).

--Parafoveal VDIs in the affected, nasal, and temporal sectors at Month 3 were significantly associated with corresponding parafoveal thickening and the parafoveal VDIs in the affected and temporal sectors were significantly associated with future foveal thickening.

--Moreover, the parafoveal VDI in the temporal sector showed a significant association with the total required number of ranibizumab injections.

The degree of congestion with branch retinal vein obstruction could, in conclusion, be well represented by parafoveal VDI. VDI in the temporal sector, in particular, could be a strong prediction for future ranibizumab injections and the number of ranibizumab injects in the corresponding Parafovea and fovea.