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Vitrectomy with sheathotomy benefited eyes with BRVO

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Vitrectomy with sheathotomy may be beneficial in the management of branch retinal vein occlusion, particularly in eyes with no previous posterior vitreous detachment, according to a study. The main postoperative effect was a decrease in macular edema, the study authors said.

Jerome Charbonnel and colleagues at the University of Paris analyzed 13 eyes with branch retinal vein occlusion (BRVO) that underwent vitrectomy and adventitial sheathotomy. Clinical evaluation included best corrected visual acuity, fluorescein angiography and optical coherence tomography.

Of the 13 eyes, a VA improvement of two lines or more was observed in nine eyes (69%). An absence of previous posterior vitreous detachment (PVD), poor initial visual acuity and the presence of retinal ischemia were correlated with improvement in vision. Eyes with PVD had a mean loss of 5.7 lines postop, whereas those without PVD had a postop gain of 4.2 lines.

The study authors speculated that the surgical detachment of the posterior hyaloid could be as important as the sheathotomy itself, or more so.

The study is published in the March issue of Graefe’s Archive for Clinical and Experimental Ophthalmology.