Silicon keratopathy

It is noteworthy that this formulation is different from fluorosilicones. Fluorosili-cones are fluorine-containing silicone oils with a 1.35 g/cm density. Their poor tolerance in animals and men was demonstrated by experimental studies [45,46] ocular hypertonia, keratopathy, early emulsification and severe inflammatory reactions. They cannot therefore be used as a heavy internal tamponade product. 

Other reported complications include pupillary block glaucoma, secondary glaucoma, and corneal complications, including band-shaped keratopathy (11). Pupillary block in aphakic eyes can be prevented by placing peripheral iridectomy at the 6 o clock position, since silicone is lighter than water. 

A heavier-than-water fluorinated silicone oil was used in the treatment of 30 selected cases of complicated retinal detachment due to proliferative vitreoretinopathy (n = 19), proliferative diabetic retinopathy with traction detachment (n = 2), giant retinal tears (n = 5), ruptured globe with retinal detachment (n = 2), massive choroidal effusion with retinal detachment (n = 1), and acute retinal necrosis with retinal detachment (n = 1) (13). Initial retinal reattachment was achieved in all cases. Complications included redetachment (n = l), cataract (n = 6), raised intraocular pressure (n = 4), hypotony (n = 4), keratopathy (n = 3), uveitis sjme-chia formation (n = 3), phthisis (n = 2), choroidal hemorrhage (n — 1), and vitreous hemorrhage n = 1). 

Silicone oU has had extensive use for long-term tamponade of the retina. Complications from silicone oil use include glaucoma, cataract formation, corneal edema, corneal band keratopathy, and retinal toxicity. 

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