This is done under general or local anaesthesia. The gel-like substance called the vitreous humour is removed. The space left is then filled with a gas (or sometimes liquid) which pushes the retina back into place. The gas eventually disperses but is replaced by natural body fluid made in the eye.
A scleral buckle may be applied at the same time as a vitrectomy is performed.
The retina is a structure at the back of the eye which is important for sight. When two layers of the retina become separated, it is known as retinal detachment (RD). It is a very serious eye condition and can cause blindness if it is not treated promptly. However, with rapid diagnosis and treatment, which is usually surgery, the outlook (prognosis) may be very good for some types of detachment.