Omnia, a device capable of fully automated objective refraction, keratometry, tonometry and pachymetry, has been cleared by ...

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Retinoscopy is an important part of objective refractive measurement. Traditional teaching is that on the visual axis retinoscopy should be performed to obtain accurate measurements. 1 The object of ...

The PARK 1 ® combines a non-contact pachymeter, auto-refractometer and keratometer in one unit. In addition to the objective refraction, the keratometer values and the pachymetry can be determined ...

Even objective, automated vision testing—using a device called an autorefractor—gives variable results in patients with Down syndrome, reports a new study. Even objective, automated vision testing -- ...

The aim of this study was to present methods to improve the analysis of refractive data. A comparison of methods is used to analyse refractive powers using individual powers and aggregate data.

A comparative study was conducted from August 2005 to May 2008, at Hospital Universiti Sains Malaysia and Hospital Raja Perempuan Zainab II, Kelantan, Malaysia. The sample size was calculated using ...