Leber Congenital Amaurosis (LCA)
LCA causes an abnormally low electrical response of the retina. An electro-diagnostic tests known as an electroretinogram (ERG) may be recommended to investigate how the retina is working. The electrical activity of the retina is measured under different lighting conditions to determine which part of the retina is not functioning normally. This test requires the eyes to be dilated with special eye drops. A hard contact lens in each eye is also used to measure the eye’s responses to different kinds of light.
UCSF Health medical specialists have reviewed this information. It is for educational purposes only and is not intended to replace the advice of your doctor or other health care provider. We encourage you to discuss any questions or concerns you may have with your provider.