ASTIGMATIC

Pronunciation (US):

(GB):

 Dictionary entry overview: What does astigmatic mean? 

• ASTIGMATIC (adjective)
  The adjective ASTIGMATIC has 1 sense:

1. of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images

  Familiarity information: ASTIGMATIC used as an adjective is very rare.

 Dictionary entry details 

• ASTIGMATIC (adjective)

Sense 1

Meaning:

Of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images

Antonym:

anastigmatic (not astigmatic)

Derivation:

astigmatism ((optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point)

astigmatism ((ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people)

astigmia ((optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point)

astigmia ((ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people)