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Br J Ophthalmol 81:941-948 doi:10.1136/bjo.81.11.941
  • Original Article
    • Clinical science

Reproducibility and accuracy of measurements with a hand held autorefractor in children

Table 6

Agreement between subjective refraction and autorefraction measurements in adults15 and agreement between retinoscopy and Retinomax representative measurements in children

Method Study Sample (n) Mean difference (D) Standard deviation (D) 95% Limits of agreement (D)
(Humphrey 500) − (subjective refraction) Kinge et al 15 Adults (224) −0.23 0.47 −1.18 to +0.71
(Nidek AR-1000) − (subjective refraction) Kinge et al 15 Adults (80) −0.13 0.27 −0.68 to 0.41
(Retinomax) − (retinoscopy) Present study Children (23) +0.26 0.66 −1.06 to 1.58
(Retinomax) − (subjective refinement) Present study Children (22) +0.07 0.84 −1.61 to 1.75

  • ↵Mean of the differences between two measurements of spherical equivalent (right eye only).

  • ↵Mean ± 2 standard deviations.

  • ↵Standard 1.5 D correction applied to retinoscopy measurements (phoropter at neutralisation) before calculations.

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