anorthopia

from WordNet (r) 3.0 (2006)

anorthopia
    n 1: distorted vision in which straight lines appear curved

from The Collaborative International Dictionary of English v.0.48

anorthopia \an`or*tho"pi*a\ ([a^]n`[o^]r*th[=o]"p[i^]*[.a]), n.
   [NL., fr. Gr. 'an priv. + ortho- + Gr. 'w`ps, 'wpo`s, the
   eye.] (Med.)
   Distorted vision, in which straight lines appear bent. AS
   [Webster 1913 Suppl.]