astigmaticadj.

/astɪɡˈmatɪk/

Etymology: < Greek ἀ privative + στίγμα, -ματ- point + -ic suffix.

Physiology.

1. Pertaining to or characterized by astigmatism.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [adjective] > astigmatism

astigmatic1849

1849–52 Todd's Cycl. Anat. & Physiol. IV. ii. 1468/2 An astigmatic lens.

1879 G. C. Harlan Eyesight vi. 82 The astigmatic cornea..has different curvatures in directions at right angles to each other.

2. Of an artificial lens: correcting astigmatism.

ΘΚΠ

the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [adjective] > types of spectacles > types of spectacle lens

astigmatic1881

toric1890

trifocal1921

multifocal1928

pebble-grained1943

omnifocal1962

1881 Ophthalmic Rev. Nov. (advt.) Every description of Astigmatic, Cylindrical and Sphero-Cylindrical Spectacle Lenses.

1958 Listener 6 Nov. 728/2 This distortion is immediately removed if his pictures are photographed through a one-degree astigmatic lens at an axis of fifteen degrees off the vertical.

This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2022).

单词	astigmatic
释义	astigmaticadj. /astɪɡˈmatɪk/ Etymology: < Greek ἀ privative + στίγμα, -ματ- point + -ic suffix. Physiology. 1. Pertaining to or characterized by astigmatism. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [adjective] > astigmatism astigmatic1849 1849–52 Todd's Cycl. Anat. & Physiol. IV. ii. 1468/2 An astigmatic lens. 1879 G. C. Harlan Eyesight vi. 82 The astigmatic cornea..has different curvatures in directions at right angles to each other. 2. Of an artificial lens: correcting astigmatism. ΘΚΠ the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [adjective] > types of spectacles > types of spectacle lens astigmatic1881 toric1890 trifocal1921 multifocal1928 pebble-grained1943 omnifocal1962 1881 Ophthalmic Rev. Nov. (advt.) Every description of Astigmatic, Cylindrical and Sphero-Cylindrical Spectacle Lenses. 1958 Listener 6 Nov. 728/2 This distortion is immediately removed if his pictures are photographed through a one-degree astigmatic lens at an axis of fifteen degrees off the vertical. This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2022). < adj.1849
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