When a retinal detachment develops, a separation occurs between the retina and the underlying inner wall of the eye. This is similar to wallpaper peeling off a wall. The part that is detached (peeled off) will not work properly. The picture that the brain receives becomes patchy or may be lost completely. An operation is necessary to replace the detached retina in its proper position.
People often describe seeing “something black” or “a curtain”, “cobweb” or “flashing lights”. In older persons these do not necessarily indicate a serious problem. But the sudden appearance of floaters and flashes requires a full eye examination to exclude the presence of retinal holes or tears.
Nearly all retinal detachments develop because of a hole or tear in the retina. This usually occurs when the retina becomes ‘thin’ especially in short-sighted people or if the vitreous separates from the retina. One of the most common causes for this is diabetes.
Angiography for eyes:
This is a magnified photography of the retina using an injectable dye. It helps classify the condition, record changes in the retinal blood vessels, decide on the mode of treatment and evaluate the treatment.
Medical Retina – (Retinopathy):
Diabetes causes weakening of the blood vessels in the body. The tiny, delicate retinal blood vessels are particularly susceptible. This deterioration of retinal blood vessels, accompanied by structural changes in the retina, is termed diabetic retinopathy and will lead to loss of vision.
Diabetic retinopathy is gradual in onset and is related to the duration of diabetes. High blood glucose levels, high blood pressure and genetics influence the development and progression of diabetic retinopathy.
There are two main stages of diabetic retinopathy:
Non-proliferative: When the blood vessels leak, macular edema may occur, thereby reducing vision.
Proliferative: When new, weak blood vessels grow or proliferate, bleeding into the vitreous may occur and cause severe visual loss.