astigmia

Noun astigmia has 2 senses

• astigmia(n = noun.state) astigmatism - (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people;
is a kind of ametropia
has particulars: keratectasia, keratoconus
Derived form adjective astigmatic₁

• astigmia(n = noun.state) astigmatism - (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point;
is a kind of condition, status
Derived form adjective astigmatic₁