Yes, even a slight blockage of the vision caused by partial retinal detachment can result in blindness if not treated expeditiously. About 6-8 people out 10,000 experience retinal detachment. There is no known relationship between retinal detachment and any of these problems. If only one eye suffers a serious injury or requires eye surgery then, of course, the chance of detachment in the other eye is not increased by the event. These treatments are often used in combination.
Vitrectomy means to remove the vitreous humor.
Vitreous pulls on the retina creating retinal tears or breaks. The vitreous never regenerates if it is removed, and the eye will have perfect vision and a normal shape without the vitreous. Patients often are concerned that the eye will collapse if the vitreous is removed or wonder what is used to replace it. Yes, scar tissue referred to as epiretinal membranes can be removed from the retinal surface using various methods of membrane peeling . This is called retinectomy .