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. 2015 Jun;29(3):178-84.
doi: 10.3341/kjo.2015.29.3.178. Epub 2015 May 20.

Comparison of the refractive measurements with hand-held autorefractometer, table-mounted autorefractometer and cycloplegic retinoscopy in children

Handan Akil  1 , Soner Keskin  2 , Cemal Çavdarli  3
Affiliations

Comparison of the refractive measurements with hand-held autorefractometer, table-mounted autorefractometer and cycloplegic retinoscopy in children

Handan Akil et al. Korean J Ophthalmol. 2015 Jun.

Abstract

Purpose: To evaluate the performance of the hand-held and table-top autorefractokeratometer in measuring refractive errors by comparing them with cycloplegic retinoscopy.

Methods: Included in the study were 112 eyes of 112 pediatric patients whose mean age was 6.78 ± 2.61 years (range, 2 to 12 years). The refractive errors of all the eyes were measured with and without cycloplegia using a hand held autorefractokeratometer (Retinomax K-plus 3), table top autorefractokeratometer (Canon RK-F1) and performing cycloplegic retinoscopy. The spherical equivalent, cylindrical axis and keratometer values were statistically compared.

Results: The mean spherical equivalent obtained from the Retinomax K-plus 3 was significantly less hyperopic than that of Canon RK-F1 (p = 0.004) before cycloplegia. When the Bland Altman analysis was performed in comparisons of spherical equivalent values measured with the Retinomax K-plus 3, Canon RK-F1 and cycloplegic retinoscopy, it was seen that almost all of the differences between the measurements remained within the range of ±2 standard deviation. Good agreement was found between Retinomax K-plus 3 and Canon RK-F1 for the Jackson cross-cylinder values at axis 0° and 45°; keratometer values respectively.

Conclusions: The refractive error components were highly correlated between the two instruments and cycloplegic retinoscopy.

Keywords: Hand-held autorefractokeratometer; Refractive errors; Retinoscopy; Table-top autorefractokeratometer.

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Conflict of interest statement

Conflict of Interest: No potential conflict of interest relevant to this article was reported.

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