ametropia
noun
am·e·tro·pia ˌa-mə-ˈtrō-pē-ə 
: an abnormal refractive condition (such as myopia, hyperopia, or astigmatism) of the eye in which images fail to focus upon the retina
ametropic
ˌa-mə-ˈtrō-pik
adjective -ˈträ-
Word History
Etymology
New Latin, from Greek ametros without measure (from a- + metron measure) + New Latin -opia — more at measure
First Known Use
1860, in the meaning defined above
Medical Definition
ametropia
noun
am·e·tro·pia ˌam-ə-ˈtrō-pē-ə
: an abnormal refractive eye condition (as myopia, hyperopia, or astigmatism) in which images fail to focus upon the retina
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