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FRACTION SNELLEN [4 records]
Record 1 - internal organization data 2026-02-18
Record 1, English
Record 1, Subject field(s)
- Medical Instruments and Devices
- Diagnostic Procedures (Medicine)
- The Eye
Record 1, Main entry term, English
- Snellen eye chart
1, record 1, English, Snellen%20eye%20chart
correct, noun
Record 1, Abbreviations, English
Record 1, Synonyms, English
- Snellen chart 2, record 1, English, Snellen%20chart
correct, noun
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The Snellen chart serves as a portable tool to quickly assess monocular and binocular visual acuity. ... The Snellen chart uses a geometric scale to measure visual acuity, with normal vision at a distance being set at 20/20. A standard Snellen eye chart is 22 inches wide by 11 inches tall. The numerator represents the distance that the patient is standing from the chart (in feet), while the denominator represents the distance from which a person with perfect eyesight is still able to read the smallest line that the patient can clearly visualize. 1, record 1, English, - Snellen%20eye%20chart
Record 1, French
Record 1, Domaine(s)
- Instruments et appareillages médicaux
- Méthodes diagnostiques (Médecine)
- Oeil
Record 1, Main entry term, French
- échelle de Snellen
1, record 1, French, %C3%A9chelle%20de%20Snellen
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- tableau de Snellen 2, record 1, French, tableau%20de%20Snellen
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le tableau de Snellen, composé de lettres ou de symboles de différentes tailles, est le principal outil d’évaluation de l'acuité visuelle. Lors d’un examen oculaire, on demande à un individu de lire les lettres du tableau à une distance donnée, généralement 20 pieds dans le cas de l'évaluation de la vision 20/20. La fraction représente le rapport entre la distance entre le sujet et le tableau et la distance à laquelle une personne ayant une vision «normale» peut lire la même ligne de lettres. 3, record 1, French, - %C3%A9chelle%20de%20Snellen
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2017-05-09
Record 2, English
Record 2, Subject field(s)
- Diagnostic Procedures (Medicine)
- The Eye
Record 2, Main entry term, English
- Snellen fraction
1, record 2, English, Snellen%20fraction
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- Snellen notation 2, record 2, English, Snellen%20notation
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Visual acuity is the measure of the sensitivity of the visual system. It is expressed in Snellen notation, expressed as a fraction, where the numerator indicates the test distance and the denominator denotes the distance at which the letter read by the patient subtends 5 minutes of arc. 2, record 2, English, - Snellen%20fraction
Record 2, French
Record 2, Domaine(s)
- Méthodes diagnostiques (Médecine)
- Oeil
Record 2, Main entry term, French
- fraction de Snellen
1, record 2, French, fraction%20de%20Snellen
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Représentation de l'acuité visuelle sous la forme d’une fraction [...] dans laquelle le numérateur est la distance, exprimée en mètres(ou en pieds), à laquelle on fait l'examen [...], et le dénominateur la distance à laquelle la plus petite lettre de Snellen reconnue par l'œil est vue sous un angle de 5 minutes. 1, record 2, French, - fraction%20de%20Snellen
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2013-09-19
Record 3, English
Record 3, Subject field(s)
- The Eye
Record 3, Main entry term, English
- visual acuity
1, record 3, English, visual%20acuity
correct
Record 3, Abbreviations, English
- VA 2, record 3, English, VA
correct
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Acuteness or clearness of vision (especially of form vision) which is dependent on the sharpness of the retinal focus, the sensitivity of the nervous elements, and the interpretative faculty of the brain. 3, record 3, English, - visual%20acuity
Record number: 3, Textual support number: 1 OBS
Involved are the minimum visible (light sense), the minimum separable (resolving power), and psychological interpretations. ... Clinically, it is usually measured with a Snellen chart in terms of the Snellen fraction, and, occasionally, with the Landolt broken ring chart. 3, record 3, English, - visual%20acuity
Record 3, French
Record 3, Domaine(s)
- Oeil
Record 3, Main entry term, French
- acuité visuelle
1, record 3, French, acuit%C3%A9%20visuelle
correct, feminine noun
Record 3, Abbreviations, French
- AV 1, record 3, French, AV
correct, feminine noun
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Capacité à voir distinctement les détails d’un objet. 1, record 3, French, - acuit%C3%A9%20visuelle
Record number: 3, Textual support number: 1 OBS
Quantitativement, elle s’exprime de deux façons : 1-comme l'inverse de l'angle minimum de résolution [...] 2-en fraction de Snellen. 1, record 3, French, - acuit%C3%A9%20visuelle
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Ojo
Record 3, Main entry term, Spanish
- agudeza visual
1, record 3, Spanish, agudeza%20visual
correct, feminine noun
Record 3, Abbreviations, Spanish
- AV 1, record 3, Spanish, AV
correct, feminine noun
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Capacidad del ojo de distinguir objetos muy próximos entre sí. 1, record 3, Spanish, - agudeza%20visual
Record 4 - internal organization data 1998-03-04
Record 4, English
Record 4, Subject field(s)
- The Eye
Record 4, Main entry term, English
- near visual acuity
1, record 4, English, near%20visual%20acuity
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Oeil
Record 4, Main entry term, French
- acuité visuelle en vision de près
1, record 4, French, acuit%C3%A9%20visuelle%20en%20vision%20de%20pr%C3%A8s
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- acuité visuelle au près 1, record 4, French, acuit%C3%A9%20visuelle%20au%20pr%C3%A8s
feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Capacité de discriminer, en vision rapprochée, les détails d’un objet. 1, record 4, French, - acuit%C3%A9%20visuelle%20en%20vision%20de%20pr%C3%A8s
Record number: 4, Textual support number: 1 OBS
Elle s’exprime de différentes façons :(1)-par l'angle de résolution [...] du plus petit caractère vu à une distance donnée;(2)-en fraction de Snellen [...];(3)-par une notation arbitraire(notation de Jaeger, J6 par exemple) ;(4)-par la notation N(en utilisant la police de caractère Times Roman) ou par la notation à points(en utilisant n’ importe quelle police de caractères) [...];(5)-par la notation M en utilisant les polices de caractère telles que Times Roman, Century [...] 1, record 4, French, - acuit%C3%A9%20visuelle%20en%20vision%20de%20pr%C3%A8s
Record number: 4, Textual support number: 2 OBS
Source MVISI-F : Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997. 2, record 4, French, - acuit%C3%A9%20visuelle%20en%20vision%20de%20pr%C3%A8s
Record 4, Spanish
Record 4, Textual support, Spanish
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