Laser Chorioretinal Anastomosis - Mature with Preretinal Fibrosis
Fundus photograph of the same eye shown in the image "Laser Chorioretinal Venous Anastomosis - Fresh" but taken two months later. Two anastomoses have formed (black arrows) and these have decompressed the venous backpressure and led to reduced disk edema and fewer intraretinal hemorrhages (compare to the "Laser Chorioretinal Venous Anastomosis - Fresh" image). A relatively common side effect of the procedure is shown - preretinal fibrosis (yellow arrows). This can progress to cause tractional retinal detachment. If it involves the macula, vitrectomy and membrane peeling may be needed to improve visual acuity.