A scotoma is a blind spot in your vision. The spot may be in the center, or it may be around the edges of your vision.
A scotoma is caused by a problem in part of the visual system. The visual system includes the cornea, lens, retina, optic nerve, and vision centers in the brain. Scotomas may be a result of:
A scintillating scotoma may be the first sign of a migraine. This type usually starts as a spot of flickering light near the center of your vision. The spot may drift around the eye, or create arcs of light rather than being dark.
The symptoms of a scotoma may include:
Your eye care provider will give you a complete eye exam. He or she will also ask about your medical history because many diseases may affect your eyes.
A scotoma cannot be treated with glasses, contact lenses, or surgery. You may need to use devices to help you with your daily activities. Learning safety precautions and training in walking or driving with low vision are also important.
Tools that can be used to help include:
Many electronic aids can help people with a scotoma. Some of these are: