Paralysing an eye - Biology Forum

last updated by

TheVirus 14 years, 11 months ago

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- December 14, 2009 at 6:19 pm #12466
  TheVirus
  Participant
  Hey, i’ve seen in many medical shows that when a patient’s eye is paralysed with medication it seems to change colours (the iris turns black as far as i’ve seen). Does this really happen when someone’s eyes are paralysed? If it does happen, do u know why?
- December 15, 2009 at 11:18 am #96026
  zami’87.
  Participant
  pupil widens(that’s why eyes seem black),iris can’t contract..for example because of oculomotor nerve damage.
  http://en.wikipedia.org/wiki/Pupillary_light_reflex
- December 16, 2009 at 2:06 am #96058
  TheVirus
  Participant
  quote zami’87.:
  pupil widens(that’s why eyes seem black),iris can’t contract..for example because of oculomotor nerve damage.
  http://en.wikipedia.org/wiki/Pupillary_light_reflex
  But, how does the fact that it can’t contract affect the colour?
- December 21, 2009 at 7:56 pm #96176
  JackBean
  Participant
  the color of iris as itself is not affected, but the pupil is wide and seems to be black 😉
- December 21, 2009 at 10:37 pm #96180
  TheVirus
  Participant
  Oh, i see. Thanks.
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