astigmia
nounUS /əˈstɪɡmiʌ/
Etymology From a- (negative prefix) + Ancient Greek στίγμα (stígma, “mark, point”) + -ia.
1
Dated, Usually astigmatism
- […] and the measurement and correction of astigmia is one of the chief functions of the optometrist.1925, Elmer LeRoy Ryer, “General Principles” (chapter 1), in Ophthalmometry, Optical Publishing Company, page 3:
- Astigmia of the whole eye […] is the resultant of the special astigmia of all four refracting surfaces, […]1897, American Journal of Ophthalmology, page 312:
2 more examples
- Regular astigmia must be considered congenital, as a rule.1910, John Elmer Weeks, A Treatise on Diseases of the Eye, page 648:
- When the corneal astigmia is direct, and about 0.75 D., we may expect to find an almost total absence of astigmia by subjective examination.1898, Ophthalmic record, page 604: