| NOUN | state | astigmia, astigmatism | (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea |
|---|---|---|---|
| state | astigmia, astigmatism | (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point |
| Meaning | (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people. | |
|---|---|---|
| Synonym | astigmatism | |
| Category | ophthalmology | The branch of medicine concerned with the eye and its diseases |
| Narrower | keratectasia | Abnormal bulging / bulging of the cornea of the eye |
| keratoconus | Abnormal cone-shaped protrusion of the cornea of the eye | |
| Broader | ametropia | (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia |
| Spanish | astigmatismo | |
| Catalan | astigmatisme | |
| Adjectives | astigmatic | of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images |
| Meaning | (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point. | |
|---|---|---|
| Synonym | astigmatism | |
| Category | optics | The branch of physics that studies the physical properties of light |
| Broader | condition, status | A state at a particular time |
| Opposite | stigmatism | (optics) condition of an optical system (as a lens) in which light rays from a single point converge in a single focal point |
| Spanish | astigmatismo | |
| Catalan | astigmatisme | |
| Adjectives | astigmatic | of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images |
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