Webster's Revised Unabridged Dictionary · 1913

ametropia

ametropia (am`e*trō"pi*ȧ) , noun

[Greek 'a`metros irregular + 'w`ps, 'wpo`s, eye.]

(Medicine) A visual impairment resulting from faulty refraction of light rays in the eye. Subtypes include myopia astigmatism and hyperopia.