April 2014
Volume 55, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2014
Screening for refractive errors in children using the 2WIN, binocular refractometer.
Author Affiliations & Notes
  • Giuliano Stramare
    Oculistica, Ospedale Sacro Cuore, Negrar, Italy
Investigative Ophthalmology & Visual Science April 2014, Vol.55, 4500. doi:
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      Giuliano Stramare; Screening for refractive errors in children using the 2WIN, binocular refractometer.. Invest. Ophthalmol. Vis. Sci. 2014;55(13):4500.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose: To evaluate the performance of the 2WIN binocular refractometer in measuring refractive errors by comparing them with Retinomax K-plus2 and TONOREF II Autorefractor.

Methods: 208 children (416 eyes) were examined consecutively in our office. Each patient was screened with the 2WIN refractometer, the Retinomax and and the Nidek autorefractometer on the same day as part of a comprehensive pediatric ophthalmic examination. The age range was between 10 months and 13 years.

Results: Compared to the Retinomax the mean difference in the sphere before cycloplegia was 0.40 D with a standard deviation of 1.19 D; after cycloplegia was -0.56 D with a standard deviation of 0.93 D. the mean difference in the cylinder before cycloplegia was -0.2 D with a standard deviation of 0.5 D; after cycloplegia was -0.04 D with a standard deviation of 0.79 D. Compared to the Nidek TONOREF II mean difference in the sphere before cycloplegia was -0.02 D with a standard deviation of 1.28 D; after cycloplegia was -0.56 D with a standard deviation of 1.01 D mean difference in the cylinder before cycloplegia was 0.07 D with a standard deviation of 0.49 D; after cycloplegia was 0.15 D with a standard deviation of 0.68 D

Conclusions: 2WIN refractometer have good performance in detection of refractive errors compared to Retinomax K-plus2 and NIDEK TONOREF II Autorefractor. 2WIN refractometer could be an easy-to-use, safe and reliable screening method of refraction in young children, especially for ophthalmologists unskilled in retinoscopy, orthoptists and pediatricians.

Keywords: 676 refraction • 605 myopia • 547 hyperopia  
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