Der Teller-Acuity-Card-Test: Möglichkeiten und Grenzen der klinischen Anwendung

Katz, B.; Sireteanu, Ruxandra

doi:10.1055/s-2008-1046406

Cited by 17 publications

(9 citation statements)

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“…Grating acuity and VA results from some of our participants show that the measured VA comes close to this theoretical limit; one participant achieved a grating acuity of 3.3 cycles per degree, corresponding to 20/200. Optotype and grating acuity, however, should not be directly compared (Katz & Sireteanu, 1989), because grating acuity relies on cues derived from angles of lines across a large visual field (even when lines are interrupted), whereas optotype VA depends on the recognition of single optotype features in a very small visual field. The best Landolt C-rings acuity of the same participant was 20/546.…”

Section: Discussionmentioning

confidence: 99%

Subretinal Visual Implant Alpha IMS – Clinical trial interim report

et al. 2015

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A subretinal visual implant (Alpha IMS, Retina Implant AG, Reutlingen, Germany) was implanted in 29 blind participants with outer retinal degeneration in an international multicenter clinical trial. Primary efficacy endpoints of the study protocol were a significant improvement of activities of daily living and mobility to be assessed by activities of daily living tasks, recognition tasks, mobility, or a combination thereof. Secondary efficacy endpoints were a significant improvement of visual acuity/light perception and/or object recognition (clinicaltrials.gov, NCT01024803). During up to 12 months observation time twenty-one participants (72%) reached the primary endpoints, of which thirteen participants (45%) reported restoration of visual function which they use in daily life. Additionally, detection, localization, and identification of objects were significantly better with the implant power switched on in the first 3 months. Twenty-five participants (86%) reached the secondary endpoints. Measurable grating acuity was up to 3.3 cycles per degree, visual acuities using standardized Landolt C-rings were 20/2000, 20/2000, 20/606 and 20/546. Maximal correct motion perception ranged from 3 to 35 degrees per second. These results show that subretinal implants can restore very-low-vision or low vision in blind (light perception or less) patients with end-stage hereditary retinal degenerations.

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Section: Discussionmentioning

confidence: 99%

Subretinal Visual Implant Alpha IMS – Clinical trial interim report

et al. 2015

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“…It has been shown by different authors [14,15,23] that the objective assessment of visual acuity, for example by preferential looking, is not suitable for sufficient amblyopia screening. Therefore, screening should concentrate on the detection of amblyogenic factors.…”

Section: Discussionmentioning

confidence: 99%

Sensitivity of the MTI photoscreener for amblyogenic factors in infancy and early childhood

Weinand

Gräf

Demming

1998

Graefe's Archive for Clinical and Experimental Ophthalmology

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“…Unter pathologischen Bedingungen wird ein Muster aus gleich dicken schwarzen und weißen Linien im Allgemeinen leichter aufgelöst als ein Landolt-Ring derselben Liniendicke oder Lü-ckengröße [19]. Dieser Unterschied ist bei Schielamblyopie besonders deutlich [12,15,16]. Mit dem Teller-Acuity-Card-Test wurde gezeigt, dass das Verhältnis zwischen dem Landolt-RingVisus und der Gittersehschärfe 1:10 erreichen kann [15,16].…”

Section: Zusammenfassungunclassified

“…Dieser Unterschied ist bei Schielamblyopie besonders deutlich [12,15,16]. Mit dem Teller-Acuity-Card-Test wurde gezeigt, dass das Verhältnis zwischen dem Landolt-RingVisus und der Gittersehschärfe 1:10 erreichen kann [15,16]. Deshalb ist das Preferential-Looking mit Gittermustern wenig sensitiv für Schielamblyopie [15 -18].…”

Section: Zusammenfassungunclassified