Fig. 2

Location of radial retinectomies. After the circumferential retinectomy, a fold of the retina inferior to the optic disc indicates circumferential shortening (thick line and arrows). This can be relieved by performing a small radial retinectomy at (a) and a longer radial retinectomy at (b) to allow the retina to open like a flower petal. Reprinted with permission from Williamson [6]