A Case Of Superior Nasal Branch Retinal Vein Occlusion With Macular Detachment

Objective: Branch retinal vein occlusion is a common retinal vascular disease in China,and its secondary macular edema is the main cause of vision loss in patients.Although the mechanism of branch retinal vein occlusion secondary macular edema is complex,the basic condition is that the drainage area of the occluding branch vein includes macular area(such as superior or inferior temporal branch vein occlusion,superior or inferior branch macular vein occlusion).In clinical work,peripheral branch retinal vein occlusion with distant macular edema not within the scope of blood drainage is rare,especially the serous detachment of retina in the macular region.Methods: A case of superior nasal branch retinal vein obstruction complicated with macular cystic edema and serous retinal detachment was reported.The pathogenesis of macular edema was speculated and verified,and related literatures were reviewed for comprehensive analysis and discussion.Conclusion: Peripheral branch retinal vein occlusion with serous detachment in macular area is very rare and its pathogenesis has not been fully elucidate.Through the analysis of the clinical characteristics of this case,we proposed "1.Macular edema is mainly due to the drainage of leakage fluid from the vessels in the occlusion area to the macular area through the"potential water channel;2.Serous detachment in the macular area is caused by the accumulation rate of subretinal fluid in the macular area greater than the rate of diffusion into the retina and absorption into the choroid through the RPE layer."...