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Noun astigmia has 2 senses
- astigmatism, astigmia - (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
--1 is a kind of ametropia
--1 has particulars: keratectasia; keratoconus
- astigmatism, astigmia - (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
--2 is a kind of condition, status