Assessing visual acuity across five disease types: ETDRS charts are faster with clinical outcome comparable to Landolt Cs

Koenig, Simone; Tonagel, Felix; Schiefer, Ulrich; Bach, Michael; Heinrich, Sven

doi:10.1007/s00417-014-2670-y

Cited by 14 publications

(15 citation statements)

References 12 publications

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“…The points are distributed evenly above and below the zero horizontal line, so no predominance of any of them can be stated. Considering that norms and standards are based on printed charts [14][15], our results confirm the usability of the charts displayed on mobile devices. Another advantage of this chart displaying method, such as dynamic optotype creation was then prevailing.…”

supporting

confidence: 71%

Standardized ETDRS charts for mobile devices

et al. 2017

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Abstract-Charts displayed on mobile devices were verified in comparison to standardized ETDRS charts. Such a method of visual acuity assessment is characterized by stabile brightness and contrast. Moreover the ability to dynamically display random optotypes eliminates the problem of memorizing the contents of charts, making measurements more reliable. Our tests showed that the VA measured with a mobile device and the VA tested using standardized printed charts are not significantly different.

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supporting

confidence: 71%

Standardized ETDRS charts for mobile devices

et al. 2017

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“…[1][2][3][4][5] The Early Treatment Diabetic Retinopathy Study (ETDRS) chart is designed for use in clinical studies where accurate and repeatable visual acuity measurements are required. 6,7 Although many types of visual acuity charts are used, the ETDRS chart is accepted worldwide as the gold standard for accurate visual acuity measurement.…”

mentioning

confidence: 99%

Validation of an automated‐ETDRS near and intermediate visual acuity measurement

Pang

Sparschu

Nylin

2020

Clinical and Experimental Optometry

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Background The aim of this study was to determine the repeatability of an automated‐ETDRS (Early Treatment Diabetic Retinopathy Study) near and intermediate visual acuity measurement in subjects with normal visual acuity and subjects with reduced visual acuity. The agreement of automated‐ETDRS with gold standard chart‐based visual acuity measurement was also studied. Methods Fifty‐one subjects were tested (aged 23 to 91 years; 33 subjects with normal visual acuity: 6/7.5 or better; 18 subjects with reduced visual acuity: 6/9 to 6/30). Near and intermediate visual acuity of one eye from each subject was measured with an automated tablet‐computer system (M&S Technologies, Inc.) and Precision Vision paper chart in a random sequence. Subjects were retested one week later. Repeatability was evaluated using the 95 per cent limits of agreement (LoA) between the two visits. Results Average difference between automated‐ETDRS near visual acuity and near visual acuity by paper chart was 0.02 ± 0.10 logMAR (p > 0.05). Agreement of near visual acuity between automated‐ETDRS and paper chart was good, with 95 per cent LoA of ±0.19 logMAR. Furthermore, automated‐ETDRS near visual acuity showed good repeatability (95 per cent LoA of ±0.20). Mean difference between automated‐ETDRS intermediate visual acuity and intermediate visual acuity by paper chart was 0.02 ± 0.10 logMAR (p > 0.05). Agreement of intermediate visual acuity between automated‐ETDRS and paper chart was good, with 95 per cent LoA of ±0.20 logMAR. In addition, automated‐ETDRS intermediate visual acuity had good repeatability (95 per cent LoA of ±0.16). Conclusion Automated‐ETDRS near and intermediate visual acuity measurement showed good repeatability and agreement with the gold standard chart‐based visual acuity measurement. The findings of this study indicate the automated visual acuity measurement system may have potential for use in both patient care and clinical trials.

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“…B. [10]) und zumindest zwischen Buchstaben bzw. Zahlen und Landolt-Ringen bestehen wohl keine übermäßigen optotypenspezifischen Unterschiede.…”

Section: Sehschärfeunclassified

Sehschärfe, Kontrastempfindlichkeit, Farbensehen: Gedanken zu psychophysischen Untersuchungen in der Neuroophthalmologie

Heinrich

Hoffmann

2018

Klin Monatsbl Augenheilkd

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ZusammenfassungTrotz aller technischen Fortschritte in der ophthalmologischen Diagnostik spielt die psychophysische Untersuchung der individuellen Sehleistungen weiterhin eine wichtige Rolle. Dies gilt insbesondere für neuroophthalmologische Fragestellungen. Der vorliegende Artikel betrachtet methodische und klinische Aspekte der Untersuchung von Sehschärfe, Kontrastempfindlichkeit und Farbsehvermögen. Im Gegensatz zur Sehschärfe wird die Kontrastempfindlichkeit bislang nur selten untersucht, obgleich ihre Reduktion in vielen Fällen ein sensitiverer Indikator einer Erkrankung ist. Generell haben standardisierte Verfahren, wie sie insbesondere für die Sehschärfeprüfung existieren, den Vorteil der Vergleichbarkeit. Vom Standard abweichende Verfahren können hierbei jedoch unter Umständen die spezifischen, für eine Erkrankung charakteristischen Sehstörungen besser erfassen, sodass deren Anwendung im konkreten Einzelfall gerechtfertigt ist. Dies zeichnet sich auch für die Testung des Farbensehens ab. Bisherige Studien deuten darauf hin, dass die Messung der Farbsättigungsschwelle bei erworbenen Farbsehstörungen eine effiziente und sensitive Alternative zu herkömmlichen Farbsehtests darstellen könnte.

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Assessing visual acuity across five disease types: ETDRS charts are faster with clinical outcome comparable to Landolt Cs

Abstract: The Landolt C test and the ETDRS test yielded comparable results in visual acuity and test-retest reliability in all disease groups. The ETDRS test was usually faster and more accepted by both examiners and examinees than the Landolt test.

Cited by 14 publications

References 12 publications

Standardized ETDRS charts for mobile devices

Standardized ETDRS charts for mobile devices

Validation of an automated‐ETDRS near and intermediate visual acuity measurement

Sehschärfe, Kontrastempfindlichkeit, Farbensehen: Gedanken zu psychophysischen Untersuchungen in der Neuroophthalmologie

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