PMID: 9530603Apr 8, 1998Paper

Potential acuity meter versus scanning laser ophthalmoscope to predict visual acuity in cataract patients

Journal of Cataract and Refractive Surgery
O E CuzzaniM Rydz

Abstract

To compare the relative abilities of the Potential Acuity Meter (PAM) and the Scanning Laser Ophthalmoscope (SLO) to predict the postoperative visual acuity in patients with mild to dense cataract. Gimbel Eye Centre, Calgary, Alberta, Canada. In this single-masked prospective study of 31 consecutive eyes with mild to dense cataract and a best corrected visual acuity (BCVA) of 20/40 or less, patients had predictive visual acuity (PVA) testing using the PAM and SLO. Preoperative and postoperative BCVA was recorded using Snellen charts. Differences between PVA and postoperative BCVA results were assessed by a two-tailed t-test and correlation analysis. The SLO was correct within two lines of outcome in 30 of 31 eyes and the PAM, in 19 of 31 eyes. A two-tailed dependent t-test showed a significant difference between predicted and final visual acuity for the PAM (P = .0001) and a nonsignificant difference for the predicted and final visual acuity for the SLO. A correlation analysis showed a mild correlation for the PAM (r = .49) and a good correlation for the SLO (r = .81). For a prediction of better or worse than 20/40, the SLO showed a sensitivity of 0.964 and specificity of 1.0 and the PAM, of 0.67 and 1.0, respectively. The SLO ...Continue Reading

References

Aug 1, 1988·Ophthalmology·S T MillerJ M Freeman
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Jan 1, 1987·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·M B DatilesM Podgor
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Citations

Nov 3, 2004·Journal of Cataract and Refractive Surgery·Jérôme C VryghemKathleen Leroux
Sep 29, 2000·Journal of Cataract and Refractive Surgery·P I GusS Kwitko
Jul 29, 2009·Optometry : Journal of the American Optometric Association·Marta Vianya-EstopaDavid B Elliott
Dec 15, 2015·Indian Journal of Ophthalmology·Tamer A MackyAhmed S Gado
Apr 7, 2005·Journal of Cataract and Refractive Surgery·Harvey S Uy, Victor Michael R Munoz
Feb 24, 2001·Clinical & Experimental Ophthalmology·C J DevereuxI H Story
Dec 13, 2002·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Patrick QuaidMichael J Cox
Jun 5, 2004·Journal of Cataract and Refractive Surgery·Eva StifterWolfgang Radner

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