Retinal Imaging (Bob Tapper ASIS FRPS)

Photograph by

Medical Group

About this image

Colour Fundus photograph (top) The colour photograph shows the back of the eye – the retina. There are red hemorrhaging and yellow deposits in the lower half of the picture, while the upper part of the picture is spared. This indicated that there is a potential of blood vessel blockage in the lower half of the retina. Patients showing this type of characteristics are those possibly suffering from diabetes, high blood pressure, glaucoma etc. The Fundus Fluorescein Angiogram (bottom) This image is of the same patient that has been injected with Sodium Fluorescein dye. Sodium fluorescein is injected into the arm and as it circulates around the back of the eye a series of photographs are taken. The properties of sodium fluorescein dye is that if it is photographed under a blue light it make the dye fluoresce. As can be seen by this photograph the area is “lite up” where the dye has been excited by the light. The photographed area shows that there are two distinct areas. Above there are normal blood vessels while from the centre and down there is a large area with no dye indicating lack of blood flow. There is also “budding” of small vessels (these look like small branches of a tree). These are new blood vessels trying to be formed by the body. These can hemorrhage and therefore the physician will need to use a laser on the area to seal and reduce this particular risk.