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April 1995

Laser-Induced Chorioretinal Venous Anastomosis for Treatment of Nonischemic Central Retinal Vein Occlusion

Author Affiliations

From the Lions Eye Institute, Perth, Australia.

Arch Ophthalmol. 1995;113(4):456-462. doi:10.1001/archopht.1995.01100040072030

Objectives:  To determine whether a chorioretinal venous anastomosis could be created in humans and to evaluate the influence this has on patients with non-ischemic central retinal vein occlusions in whom progressive visual loss developed.

Design:  Retrospective study.

Patients:  A total of 24 patients with nonischemic central retinal vein occlusions and progressive visual loss.

Intervention:  An attempt was made to create a chorioretinal venous anastomosis using laser photocoagulation to enable obstructed venous blood to enter the choroid, thus bypassing the site of occlusion.

Main Outcome Measures:  Visual acuity, fundoscopic appearance, and rapid sequence fluorescein angiograms.

Results:  A successful chorioretinal venous anastomosis was created in eight cases (33%), with improvement in visual acuity and resolution of the funduscopic appearance of venous occlusion in all eight cases. Of the 16 patients (67%) in whom an anastomosis was not successfully created, the ischemic form of central retinal vein occlusion developed in five (31%), and eight (50%) were left with various degrees of macular damage and reduced visual acuity.

Conclusions:  Peripheral chorioretinal venous anastomoses can be created in a nonischemic central retinal vein occlusion and appear to be well tolerated. This technique may have some value in the treatment of patients with this condition; however, to address this fully, a properly constructed randomized prospective clinical trial will need to be performed.

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