In retinal detachment surgery, Chawla (I97I) had excellent results using a 7-mm. encircling silastic band, cauterization of the edges of the tear by cryocautery, and evacuation of the subretinal fluid (Schepens, Okamura, and Brockhurst, I957). He felt that the technique was simpler than scleral dissection and safer than the supramid encircling suture. The present study has the following aims: (...