Astigmatism
nounverified·updated May 18, 2026
(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
Framework senses
- §1
- (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point
- §2
- (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
- §1 · legacy_primary
- (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal pointDR-088 backfill from the noun definition column