Diagnosis of Diabetic Retinopathy
Diabetic retinopathy is diagnosed with the help of the following tests-
Eye examination - After dilating the pupil, the ophthalmologist checks the retina with an instrument called an ophthalmoscope for -
► Leaking blood vessels
► Macular edema (swelling of the central part of the retina, the area that is responsible for central vision)
► Pale, fatty deposits (called lipids on the retina) which signal leaking blood vessels
► Damaged optic nerve tissue
► Changes in the blood vessels in the eyes
Visual acuity - The ophthalmologist may also test how well the patient can see at various distances.
Tonometry- The ophthalmologist may also measure the pressure in the eye, with the help of a tonometer to check for signs of glaucoma, which also commonly occurs in people with diabetes.
Fundus Fluorescein angiography (FFA) - This is an imaging technique which gives a clear picture about the eye vasculature and allows the eye care professional to identify any leaking blood vessels.
Retinal photography: Retinal photography is a procedure where a picture of the retina is taken and evaluated for abnormalities.