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astigmia

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astigmia


  1  definition  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  astigmia 
  n  1:  (ophthalmology)  impaired  eyesight  resulting  usually  from 
  irregular  conformation  of  the  cornea  [syn:  {astigmatism}] 
  2:  (optics)  defect  in  an  optical  system  in  which  light  rays 
  from  a  single  point  fail  to  converge  in  a  single  focal 
  point  [syn:  {astigmatism}]  [ant:  {stigmatism}] 




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