The Collaborative International Dictionary of English v.0.48:
amblyopia \am`bly*o"pi*a\ ([a^]m`bl[-e]*[=o]"p[-e]*[.a]), amblyopy \am"bly*o`py\ ([a^]m"bl[-e]*[=o]`p[y^]), n. [Gr. 'amblywpi`a; 'ambly`s blunt, dim + 'w`ps eye: cf. F. amblyopie.] (Med.) Weakness of sight, without any detectable organic lesion. [1913 Webster + AS]WordNet (r) 3.0 (2006):
amblyopia n 1: visual impairment without apparent organic pathology