Figure 1: Diagrams showing a horizontal mattress suture (5-0 braided white Dacron), which is easy to tie and inert, anchoring a band before and after tying the suture. The dotted line represents the intrascleral suture bites. On the right, after tying the suture properly the band is anchored on the ocular surface but not indented by the suture. Left: cross-section illustration of a solid silicone scleral buckle on the surface of the sclera before the horizontal mattress suture is tied. Right: cross-section showing the buckling suture tied under tension to indent the buckle into the sclera.