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Eye (Lond). 2009 May;23(5):1052-8. doi: 10.1038/eye.2008.237. Epub 2008 Aug 1.

Interexaminer and intraexaminer reliability of the microperimeter MP-1.

Author information

1
Department of Ophthalmology, Medical University of Vienna, Vienna, Austria.

Abstract

PURPOSE:

To evaluate the interexaminer and intraexaminer reliability of macular microperimetry using the microperimeter MP-1. METHODS PARTICIPANTS: Fifteen healthy volunteers younger than 40 years of age (Group 1), 15 healthy subjects over 60 years (Group 2), and five patients with age-related macular degeneration (Group 3).

OBSERVATION PROCEDURE:

Two examiners (E1 and E2) measured, in random order, interexaminer (E2-E1a) reliability. Another examination was undergone by one of the examiners a week later to evaluate the intraexaminer (E1b-E1a) reliability.

MAIN OUTCOME MEASURES:

Macular sensitivity (mean threshold (decibel)) and stability of fixation were determined using MP1 microperimetry. Agreement was analysed by means of Bland-Altman plots and by the determination of the intraclass correlation coefficient.ResultsThe interexaminer (E2-E1a) and the intraexaminer (E1b-E1a) differences in the mean threshold values were not statistically significant (P=0.850, 95% confidence Interval (CI)=-0.265 to 0.319; P=0.246, 95% CI=-0.099 to 0.375, respectively). Limits of agreement and intraclass correlation coefficients also showed good agreement in each group.

CONCLUSIONS:

A good reliability was found for the mean threshold values in all the three groups, indicating examiner-independent measurements.

PMID:
18670459
DOI:
10.1038/eye.2008.237
[Indexed for MEDLINE]

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