Fig. 30. Evolution of choriovitreal neovascularization (CVN) after feeder vessel photocoagulation. Straight arrow in A, C, and E identifies the same vascular bifurcation. A. Photograph of a sea fan in the left eye taken 2 weeks after feeder vessel photocoagulation. The treatment spots are seen to have pigmented. Curved arrow in A and B identifies the treatment location that will develop a CVN. B. Fluorescein angiogram corresponding to A reveals continued perfusion of the sea fan. C. Fluorescein angiogram 1 week after second feeder vessel photocoagulation treatment, demonstrating nonperfusion of the sea fan. D. Photograph of the sea fan taken 1 month later, demonstrating an elevated neovascular membrane proximal to the sea fan over the treatment on the feeding arteriole with vitreous hemorrhage. Black arrows identify the distal extent of the CVN membrane. E. Fluorescein angiogram corresponding to D, demonstrating rapid filling of the chorioretinal and choriovitreal neovascularization. F. Photograph of chorioretinal and choriovitreal neovascularization taken 6 weeks later demonstrates continued enlargement and elevation. (See Color Plate 2E for appearance 4 weeks later.)