الفهرس 
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Abstract
Sixty patients presented with rhegmatogenous retinal detachment caused by postequatorial break(s) and no~ complicated by severe degree of proliferative vitreoretinopathy were included in this study. They were 321nales and 28 females with the age ranged from 20-62 years. A detailed history was taken and a full ocular examination was I done for all patients including: preoperative visual acuity, refraction ocular motility, ocular tension measurement, slit-lamp biomicroscopy of the anterior segment and examination of the retina and vitreous using direct and indirect ophthalmoscopes with scleral indentation and the Goldmann’s three mirror contact lens with and without indentation. A colour coded chart was done for every patient documenting vitreoretinal examination findings. Fundus photography was done for some cases. The patients were classified into two group. Fourty patients in group (A) to which a conventional retinal surgery (cryotherapy, scleral buckling, drainage of subretinal fluid and intravitreal injection of air) was performed and twenty patients in group (B) to which pars plana vitrectomy with internal tamponade with sulphur hexafluoride or silicon was performed. The patients were followed up for a period ranged from 6-30 months. The preoperative visual acuity ranged from hand movement to 6/36, and 76.7% of patients (750/0 in group A and 800/0 in group B) presented with visual acuity less than counting fingers below one meter. Only one patient presented with visual acuity 6/36.