Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Visual Acuity

Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.

MeSH Record

Classification

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See Also

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Synonyms

3 entry terms
  • Acuities, Visual
  • Acuity, Visual
  • Visual Acuities

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Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

70(68)

MeSH Record

Previous Indexing

  • Vision (1966-1967)

MeSH Hierarchy

Tree Numbers

  1. E01w.370.380.850.950w
  2. F02w.463w.593w.932w.901w
  3. G14.940w

MeSH Record

NLM Classification

WW 145

AMA Style

References

  1. National Library of Medicine. Visual Acuity. Medical Subject Headings (MeSH). 2026. Unique ID D014792. http://id.nlm.nih.gov/mesh/2026/D014792
  2. Visual Acuity. In: Wikipedia. https://en.wikipedia.org/wiki/Visual_acuity
  3. Visual Acuity. In: Wikidata. https://www.wikidata.org/wiki/Q555066