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Purple spots in my sight

When I focus my sight to one shiny spot like a sun or a regular light ball I see purple spots in the place where I focused it.For example if I lock on the light ball for 1sec and moment later lock on blackboard I see the purple spot of the exact light ball shape on the number or letter I am focused on.I am in puberty so maybe it has something to do with this? Please help!
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Thank you for an answer.
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233488 tn?1310693103
MEDICAL PROFESSIONAL
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Avatar universal
This sounds like retinal persistence -- a bright image, if stared at for a length of time, produces an after-image on the eye's retina.  You can minmize this by not staring at bright lights or objects for too long.  Ordinarily this is nothing to be concerned about, although you should never stare directly at the sun, as that can damage the retina.  If you are feeling increased sensitivity to light or experiencing eye pain, a visit to an ophthalmologist (eye M.D.) would be a good idea.
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