2011
DOI: 10.1136/bjophthalmol-2011-300353
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Testing acuity and contrast vision under standardised lighting conditions

Abstract: A uniform illumination of top illumination test charts was achieved allowing adherence to the standards for measuring acuity set out by the European Union and enabling comparison of such visual examinations in multi-centre clinical studies.

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Cited by 6 publications
(7 citation statements)
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“…Hunters' visual acuity was tested using a 3m Landolt C Optotype which does not require knowledge of the Latin alphabet (see Keeffe et al, 1996). Under field conditions, it was impossible to ensure uniform lighting conditions (Durst et al, 2011). However, before commencing each test, we ensured that sun was behind the participant and that that the chart was clearly illuminated and free from glare.…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…Hunters' visual acuity was tested using a 3m Landolt C Optotype which does not require knowledge of the Latin alphabet (see Keeffe et al, 1996). Under field conditions, it was impossible to ensure uniform lighting conditions (Durst et al, 2011). However, before commencing each test, we ensured that sun was behind the participant and that that the chart was clearly illuminated and free from glare.…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…In addition, Durst et al . 35 have recently developed a lighting aid to produce homogenous luminance conditions in CS with the Pelli-Robson test. In this work, they recognise not only the need for a desired luminance but also the correct distribution of the same.…”
Section: Discussionmentioning
confidence: 99%
“…LUVIS ist eine vom STZ eyetrial am Department für Augenheilkunde der Universität Tübingen entwickelte standardisierte Beleuchtungseinrichtung für Sehtesttafeln [6]. Nach EN ISO 8596 ist für die Visusprüfung eine Umfeldhelligkeit (= Leuchtdichte zwischen den Optotypen) von 80 bis 320 cd/m 2 bei hohem Kontrast zu den Sehzeichen vorgeschrieben.…”
Section: Luvis Mit Pelli-robson-tafelunclassified
“…Dieser Bereich wird auch für die Prüfung des photopischen Kontrastsehens empfohlen. Da dies durch eine normale Raumbeleuchtung nicht zu erzielen ist, wird die verwendete Sehzeichentafel -Pelli-Robson -in die Beleuchtungseinrichtung eingelegt, die eine standardisierte Untersuchungsbedingung gewährleistet [6]. LUVIS arbeitet mit Leuchtstoffröhren mit tageslichtähnlichem Spektrum.…”
Section: Luvis Mit Pelli-robson-tafelunclassified
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