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nyctalopiamore about nyctalopia

nyctalopia


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Nyctalopia  \Nyc`ta*lo"pi*a\,  n.  [L.  nyctalopia,  fr  nyctalops  a 
  nyctalops,  Gr  ?.  Gr  ?  meant  a  person  affected  either  with 
  day  blindness  or  with  night  blindness,  and  in  the  former  case 
  was  derived  fr  ?,  ?,  night  +  ?,  ?,  the  eye;  in  the  latter, 
  fr  ?  +  ?  blind  +  ?.]  (Med.) 
  a  A  disease  of  the  eye,  in  consequence  of  which  the  patient 
  can  see  well  in  a  faint  light  or  at  twilight,  but  is 
  unable  to  see  during  the  day  or  in  a  strong  light;  day 
  blindness. 
  b  See  {Moonblink}. 
 
  Note:  Some  writers  (as  Quain)  use  the  word  in  the  opposite 
  sense  night  blindness.  See  {Hemeralopia}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  nyctalopia 
  n  :  inability  to  see  clearly  in  dim  light;  due  to  a  deficiency 
  of  vitamin  A  or  to  a  retinal  disorder  [syn:  {night 
  blindness},  {moon  blindness}] 




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