PMID: 11927447Apr 3, 2002Paper

A new optotype chart for detection of nonorganic visual loss

Ophthalmology
Daniel S Mojon, Petra Flueckiger

Abstract

To develop a new optotype chart for detection of nonorganic decreased vision. Comparative observational case series. Optotype thresholds determination in three normal subjects and testing on 30 consecutive patients with unclear visual acuity loss. A new optotype chart was developed, with an optotype minimum angle of resolution that is independent of size. In three normal subjects rank correlation was calculated between the optotype thresholds and the optotype sizes. A pocket chart was tested in a masked manner on 30 consecutive patients referred because of unclear visual acuity loss. Optotype thresholds and usefulness in clinical routine (positive and negative predictive values including 95% confidence intervals [CI]). The optotype thresholds did not correlate with the optotype sizes. Ten percent (3 of 30) of the patients referred because of unclear visual acuity loss had to be excluded, because their diagnosis remained unclear. All patients (16 of 16) with organic visual loss saw all optotypes sizes. Eighty-nine percent (10 of 11) of patients with nonorganic visual loss claimed to see only the larger optotypes. The positive predictive value for nonorganic visual loss of the new pocket chart was 100% (CI, 74%-100%); the negativ...Continue Reading

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Citations

Dec 18, 2008·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Sebastian Martin Zinkernagel, Daniel Stephane Mojon
Dec 14, 2005·Current Treatment Options in Neurology·Jacqueline A Leavitt
Jan 1, 2004·American Journal of Ophthalmology·Karl C GolnikEric R Eggenberger
Aug 25, 2009·Indian Journal of Ophthalmology·Mustafa CiveleklerGüngör Sobaci
Jun 19, 2014·Archivos de la Sociedad Española de Oftalmología·E Santos-BuesoJ García-Sánchez
Oct 11, 2012·Current Opinion in Ophthalmology·John Pula
Jul 10, 2007·Ophthalmology·Fatih C GundoganAtilla Bayer
May 27, 2014·Anales de pediatría : publicación oficial de la Asociación Española de Pediatría (A.E.P.)·E Santos-BuesoJ García-Feijoo
Feb 26, 2013·Journal of Telemedicine and Telecare·Zhao-tian ZhangLing-yi Liang
Mar 20, 2021·Survey of Ophthalmology·Subahari RaviskanthanAndrew G Lee

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