| Kieli | Käännökset |
|---|---|
| italia | ametropia |
| Monikko | ametropias |
(medicine, ophthalmology) Any of several disorders of the eye (spherical or cylindrical) resulting from faulty refractive ability.
A correctly-focused eye (top), and two showing refractive error: In the middle image, the light is focused too far forward; in the bottom image, the focal point is behind the eye.
(medicine, ophthalmology) Any of several disorders of the eye (spherical or cylindrical) resulting from faulty refractive ability.
Top: farsighted corrected using convex lens. Bottom: nearsighted corrected using concave lens.
(medicine, ophthalmology) Any of several disorders of the eye (spherical or cylindrical) resulting from faulty refractive ability.
A doctor uses a trial frame and trial lenses to measure the person's refractive error.