Ischaemic Diabetic Retinopathy and Synechiae (Kim Baxter)

Photograph by

Medical Group

About this image

Ischaemic Diabetic Retinopathy (top) Fluorescein angiography image used to document vascular changes in the eye caused by diabetic retinopathy. The changes occur when the blood vessel walls are damaged or weakened by diabetes, compromising the blood and oxygen supply to the retina. Fluorescein angiography involves an injection of sodium fluorescein dye into a vein in the arm, which is photographed as it travels through the blood vessels in the eye. It is commonly performed before laser treatment which is used to preserve vision. Ischaemic diabetic retinopathy indicates that parts of the retinal circulation have begun to shutdown because of an insufficient supply of oxygen. This irreversible process begins with the smallest capillaries and if left untreated expands to include larger vessels. In this image it can be clearly seen in the irregular black patch in centre of the image, indicating macula ischaemia. Synechiae (bottom) Synechiae occurs when the iris becomes attached to the surface of the lens. It is often seen in uveitis (an inflammatory condition affecting the eye) however can also be caused by trauma or surgery. The image was taken using a camera attached to a slit lamp and shows the edge of the iris attached to the lens surface.