The outcome of the removal of silicone oil from previously vitrectomis
ed diabetic eyes was studied in a series of 25 eyes in 24 patients. Or
iginally the patients presented with complex retinal detachments assoc
iated with proliferative diabetic retinopathy and all had reattached r
etinas after the initial operation. During the silicone tamponade, a n
umber of complications had occurred. Cataract had developed in 14 eyes
, glaucoma in eight, and reproliferation of fibrous membranes in 12. A
fter the removal of silicone the retina re-detached in three eyes (in
all cases associated with severe postoperative haemorrhage), hypotony
occurred in five eyes (transiently in four) and the seven eyes remaini
ng phakic developed a cataract. In spite of these problems the eventua
l visual acuities returned to the immediate post-vitrectomy levels in
almost all the eyes.