Three‐Way Comparison of Retinoscopy, Subjective, and Dioptron Nova Refractive Findings

On the basis of routine clinical findings taken on a group of 100 patients serving as subjects in the Houston Myopia Control study, a three‐way comparison was made between retinoscopy, subjective, and Dioptron Nova refractive findings. Retinoscopy and subjective findings compared very favorably, mean differences being −0.01 D for spherical equivalent power and −0.05 D for cylinder power. Dioptron and retinoscopy findings differed by −0.30 D for spherical equivalent power and −0.13 D for cylinder power, whereas Dioptron and subjective findings differed by −0.33 D for spherical equivalent power and −0.18 D for cylinder power.