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The state, or condition, of the eyes in which there are differences in degrees of refraction; or the ability of the eyes to change the direction of light in order to focus it on the retina.
This entry is located in the following units:
meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
op-, opt-, optico-, opsi-, opso-, -opia, -ops, -opsia, -opsis, -opsy, -optic, -opic, -opy