Involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders.

Roget 443: dim sight, dull sight half sight, short sight, near sight, long sight, double sight, astigmatic sight, failing sight; dimsightedness &c.; purblindness, lippitude^†; myopia, presbyopia^†; confusion of vision; astigmatism; color blindness, chromato pseudo blepsis^†, Daltonism; nyctalopia^†; strabismus, strabism^†, squint; blearedness^†, day blindness, hemeralopia^†, nystagmus; xanthocyanopia^†, xanthopsia [Med.]; cast in the eye, swivel eye, goggle-eyes; obliquity of vision.    winking etc. v.; nictitation; blinkard^†, albino.    dizziness, swimming, scotomy^†; cataract; ophthalmia.    [Limitation of vision] blinker; screen etc. (hider) 530.    [Fallacies of vision] deceptio visus [Lat.]; refraction, distortion, illusion, false light, anamorphosis^†, virtual image, spectrum, mirage, looming, phasma^†; phantasm, phantasma^†, phantom; vision; specter, apparition, ghost; ignis fatuus [Lat.] etc. (luminary) 423; specter of the Brocken; magic mirror; magic lantern etc. (show) 448; mirror lens etc. (instrument) 445.    ... show more

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