Question:

How does night blindness is caused?

by Guest62434  |  earlier

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How does night blindness is caused?

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  1. Night blindness can occur when your optic nerves are not signaling your pupils to dialate in dim or dark light, so the pupils remain constricted and do not pick up on light signals.


  2. Next time just use google

    http://en.wikipedia.org/wiki/Nyctalopia

  3. it is caused by weakness of eyes....
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