The clear benefit of retinal detachment surgery is that it prevents you from blindness in that eye. The degree of recovery of vision is dependent upon a multitude of factors. These include the initial cause of retinal detachment, extent of retinal detachment by the time of initial surgery, pre-existing eye conditions, the presence of retinal PVR scarring, whether your retina redetaches, and the success of initial surgery which is significantly dependent upon the experience and competence of your surgeon.