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|Noun||1.||astigmia - (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people|
ophthalmology - the branch of medicine concerned with the eye and its diseases
ametropia - (ophthalmology) faulty refraction of light rays in the eye as in astigmatism or myopia
keratectasia - abnormal bulging of the cornea of the eye
keratoconus - abnormal cone-shaped protrusion of the cornea of the eye; can be treated by epikeratophakia
|2.||astigmia - (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point|
optics - the branch of physics that studies the physical properties of light
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