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"What do electroretinography tests detect?"
I'm 40 year female and vision bad at night. What will electroretinography test show doctor?
The electroretinography test is a test of the electrical activity of the retina. The retina is the back of your eye, and is essential for normal vision. The purpose of the retina is to absorb light and then tell your brain what it is seeing. Your brain then takes this information and creates an image, which you experience as "vision". In order to communicate, the retina and the brain use electrical impulses, and the electroretinography test measures these electrical signals to determine how well your retina is functioning. Problems with the retina can cause poor vision, and electroretinography can diagnose common problems with the retina that may be leading to the poor vision you are experiencing. A few common things that the electroretinography can diagnose include diabetic retinopathy, which is damage to the blood vessels that feed the retina, and is a complication of diabetes. It can also detect damage to areas of the retina, either by trauma or by detachment of the retina from the back of the eye. Only your doctor can interpret the results of your electroretinography, and use the results to determine a diagnosis for your poor vision.
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