Pupillary stretching. A new procedure in vitreous surgery.
During vitreoretinal procedure, 26 aphakic eyes with proliferative vitreoretinopathy and diabetic traction retinal detachment were treated with a new technique for surgical dilatation of a miotic immobile pupil. Four iris loop sutures were laid in such a way that stretching of the pupil in the main directions of the four quadrants was made possible, thus forming a large, square pupil. No functional iris lesion was caused in nine eyes that developed miosis only during surgery. The other 15 eyes already had a miotic and rigid pupil preoperatively. In all but one of these cases, the stretching caused multiple small sphincter tears. The pupils remained partially dilated, but showed a reaction to miotics and mydriatics.
D000328:Adult; D000368:Aged; D001035:Aphakia / Q000601:surgery; D001036:Aphakia, Postcataract / Q000150:complications / Q000601:surgery; D005128:Eye Diseases / Q000209:etiology / Q000473:pathology / Q000601:surgery; D006801:Humans; D007498:Iris / Q000601:surgery*; D007499:Iris Diseases / Q000601:surgery; D008875:Middle Aged; D011680:Pupil; D012164:Retinal Diseases / Q000209:etiology / Q000473:pathology / Q000601:surgery; D014822:Vitreous Body / Q000601:surgery*