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O. Roche, C. Orssaud, J. Allali, M. Robert, J.-L. Dufier, C. Roumes; Clinical Comparison of the Subjective Refraction versus Irx3 Aberrometer, AutoréFractometer Nidek Ark-730a and Far Dynamic Photoretinoscopy, Power Ref 2. Invest. Ophthalmol. Vis. Sci. 2010;51(13):3931.
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Photoretinoscopy and aberrometry allow to measure static but also dynamic refraction as accommodation. The purpose of this study is to compare manual subjective refraction on a population of subjects without any ocular disease to an aberrometer and two infra red optometer
A refractive study of 31 subjects, divided in 5 age groups was realized on the right eye in near and far vision and during a measure of their accommodation. The PowerRef-II and the Nidek ARK-730A., the Irx 3 are used and compared for this study.
The mean refractive value of the eyes of all subjects was 0,02 D +/-0,45. It does not appear of statistically significant difference between different modes of measurements during a matched comparison.The group of studied subjects is representative of the population and eye ageing. The different used means of measure allow to characterize the refractive status of all our subjects and to acquire very statistically comparable, dependable data.
The description of simple, efficient but also quick clinical methods is interesting for assessing residual dynamic accommodation according to age. By showing the reliability of the manual methods of exam in comparison with systems as the aberrometer or the PowerRef-II, mainly used in scientific study rather than clinical practice.
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