inÂ·diÂ·caÂ·tion. The basis or rationale for using a particular treatment or diagnostic test; may be furnished by a knowledge of the cause (causal indication), by the symptoms present (symptomatic indication), or by the nature of the disease (specific indication). [L. fr. in-dico, pp.
This happens after a bright flash or by looking at a bright light by mistake. This has never happened until about a year ago. Update: The light is not like the blurred light you see after looking at a bright light. It is a semi-circular jagged line to the right which caused a loss of vision where it exists. It gradually expands and drifts to the right periphery disappearing after about 15 minutes. Update 2: Thanks - I don't know who is giving the thumbs down as all the answers are helpful!
What does this mean exactly? Astigmatism is a very common vision problem and one that should be discussed with your optometrist. It causes blurred vision at any distance when the irregular shaped cornea or lens prevents light from focusing properly on the retina at the back of the eye. The cornea and lens are primarily responsible for properly focusing light from entering your eyes to allow clear vision. The coordination of the eye movement depends on those eye muscles and nerves working together. A person's eye is naturally shaped like a sphere.