13 letters · 17 points in Scrabble
noun difference in the refractive power of the two eyes
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Hellenic *ə- Ancient Greek ᾰ̓- (ă-) Ancient Greek ἀν- (an-)der. English an- Ancient Greek ῐ̓́σος (ĭ́sos)lbor. English iso- English metr- English -opia English anisometropia From an- + iso- + metr- (“measure”) + -opia.
Etymology from Wiktionary, CC BY-SA 3.0