asthenopia

from WordNet (r) 3.0 (2006)

asthenopia
    n 1: a tiredness of the eyes caused by prolonged close work by a
         person with an uncorrected vision problem [syn:
         {eyestrain}, {asthenopia}]

from The Collaborative International Dictionary of English v.0.48

Asthenopia \As`the*no"pi*a\, n. [Gr. 'a priv. + sqe`nos strength
   + 'w`ps eye.]
   Weakness of sight. --Quain. -- {As`the*nop"ic}, a.
   [1913 Webster]

[email protected]