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!
Lots of things can cause red and bloodshot eyes, from lack of sleep to smoky environments and swimming in chlorinated pools. Red or bloodshot eyes are caused by widening or dilation of blood vessels in the white part of the eye. The blood vessels look prominent and give the white of the eye a pink/red appearance.ots of things can cause red and bloodshot eyes, from lack of sleep to smoky environments and swimming in chlorinated pools. Red or bloodshot eyes are caused by widening or dilation of blood vessels in the white part of the eye. The blood vessels look prominent and give the white of the eye a pink/red appearance.