A comparison of autorefraction and subjective refraction with and without cycloplegia in primary school children

摘要: Purpose To evaluate the accuracy of autorefraction using three autorefractors comparing to subjective refraction in diagnosing refractive error children. Design A cross-sectional study. Methods setting: Community based study population: 117 children sampled from primary schools. procedures: All subjects underwent auto refractors and with without cycloplegia. main outcome measures: Spherical power, cylindrical spherical equivalence (SE). Results Without cycloplegia, mean SE were significantly different for Retinomax K plus 2 (−1.55 diopters, SD 2.37 diopters; 95% CI −1.98 −1.12; P = .0023) compared monocular (−0.80 2.25 −1.21 −0.35). Mean was Grand Seiko WR5100K (−0.79 2.40 −1.23 −0.35; .0002) binocular (−0.62 2.51 −1.07 −0.16). With there no significant difference between methods. Sensitivity specificity results diagnosis myopia: cycloplegia: (sensitivity 1.0, 0.51); Canon RF10 0.92, 0.81); 0.91, 0.98). 0.97, 0.99); 0.96); 0.97). Conclusions Under noncycloplegic conditions, all have a tendency towards minus over correction resulting myopia. However accurate under cycloplegic conditions.