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Eye Surgery - Retinal Detachment Repair This surgical procedure repairs a detached retina, which is a separation of the retina from its normal position lining the back of the eye. If you think of the eye as a camera, the retina is like the film in the camera. It lines the back inside surface of the eye, and converts the optical image into nerve impulses that travel via a large nerve to the brain, where the impules become vision. The retina is only held in place against the wall of the eye by the pressure of the gel and fluid that fills the eye. This is like an inner tube held to the wall of a tire by the pressure of air. If a hole forms in the retina, the retina will deflate away from the wall of the eye, forming a retinal detachment. Holes in the retina occur for many reasons, but most are due to weak spots that occur for no identifiable reason. They are more common in nearsighted eyes. Detachments can also occur because of scar tissue pulling the retina forward, as often happens with diabetic retinopathy. Since the retina gets most of its blood supply from vessels in the wall of the eye, if it becomes detached, it does not get enough oxygen and cells in the retina suffer and begin to die. This is why most detachment repair operations are urgent. For more information visit MEDLINEplus |
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