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visual acuity Definition

visual acuity

noun

the ability of the eye to discriminate detail, usually tested by comparison with the power of the normal eye to distinguish certain letters on a standard chart at a given distance, generally 20 feet

visual acuity Usage Examples

Converse of object

  • measure: The re-evaluation will consist of a repeat attempt to measure visual acuity.
  • decrease: The ocular findings in albinism include nystagmus, decreased visual acuity; hypopigmentation of retinal tissue, and macular hypoplasia.
  • correct: The following eyesight standards are required to be met: ( a ) Minimum corrected visual acuity must be 6/6 with both eyes open.
  • have: All subjects had a visual acuity of 609 or better in both eyes.
  • improve: To this end luminaries should have full horizontal cut off using a white light source to improve visual acuity.
  • reduce: Glare from direct, reflected, or scattered sunlight causes discomfort and reduces visual acuity.

Preposition: at

  • level: Therefore, the proper techniques for night-vision viewing must be used to overcome the reduced visual acuity at lower light levels.
  • distance: Ocular Evaluation: Uncorrected visual acuities at distance were 20/40 OD, 20/40 0S, and 20/30 OU.

Adjective modifier

  • uncorrected: Surgery led to an increase in against the rule astigmatism, which was the major cause of uncorrected visual acuity less than 6/18.
  • corrected: At 6 months post-op, 8 eyes had a best corrected visual acuity of 6/6 with complete resolution of symptoms.
  • binocular: All were tested to have binocular visual acuity above 0,5 using a BiOptic.
  • post-operative: There is a significant Difference between post-operative visual acuity in these groups.
  • reduced: The patient's care giver was educated about the reduced visual acuity in AG.
  • poor: This causes a red very painful eye, with poor visual acuity.

Possessives

  • child: If the child's visual acuity is not too low then he will follow the stripes using slow smooth pursuit eye movements.

Preposition: in

  • eye: Definitions A blind child is an individual aged less than 16 years, who has a visual acuity in the better eye of 3/60.
  • child: However, measurement of visual acuity in young children presents a challenge to the clinician.

Preposition: of

  • eye: The honeybee's eye is estimated to have one per cent of the visual acuity of a human eye.
  • and/or: B2 A visual acuity of 2/60 and/or a field of vision of less than 5 degrees.
  • patient: The improvement in the visual acuity of some patients was due to cataract extraction with lens implantation performed in these cases.