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Landolt circles [1 record]

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Alphabetical list of terms

Record 1 1996-02-12

English

Subject field(s)
  • Medical and Surgical Equipment
  • Visual Disorders
  • Psychometry and Psychotechnology
DEF

circles with gaps of varying degree used in the determination of visual acuity.

DEF

A test object for the measurement of visual acuity consisting of a circle subtending 5 minutes of arc with the thickness of the ring and the gap subtending a 1-minute angle.

OBS

A device for measuring visual acuity

French

Domaine(s)
  • Équipement médico-chirurgical
  • Troubles de la vision
  • Psychométrie et psychotechnique
DEF

Optotypes formés par des anneaux brisés. La tâche du sujet examiné est de déterminer l'orientation spatiale de la brisure de l'anneau. Ils peuvent être utilisés avec des lettres ou des illustrés.

OBS

Ils ont été proposés comme étalon international par le Congrès international d'Ophtalmologie en 1909.

Key term(s)
  • anneau de Landolt

Spanish

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