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Why after you stare at a bright light afterward you see small flash lights?
Samdanes
This is caused by photoreceptor bleaching. Your eye receives and detects light when molecules called retinal change conformation from cis to trans when light hits it. Other proteins like opsin will detect this and send the information to your brain as a light spot. Retinal must then be changed back to the cis formation for more light to be received. When too much light hits too much of the retnal surface, it takes time for the changing back to occur. This is why there is a lasting image in your eyeball that your brain percieves.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThat's a good question! The lights you see are called phosphenes.
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