Comparison of the Results of Four Different Refraction Measurement Devices in Childhood with Retinoscopy

Abstract Purpose: The purpose of this study was to compare the results of 4 different autorefractometer devices with the results of retinoscopy in childhood. Methods: A total of 120 eyes of 60 patients aged between 6 and 18 who applied to Afyonkarahisar Health Sciences University were included in the study. Patients were first measured refraction with Plusoptix A09 (photoscreener) without cycloplegia. Spherical and cylindrical values ​​were recorded. Then, half an hour after the patients were instilled 2 drops of cyclopentalate with an interval of 5 minutes, dilated retinoscopy was performed, and spherical and cylindrical values ​​were recorded. Autorefractometer measurements with cycloplegia were performed with Canon RK-F1 autorefractometer, Nidek Tonoref III and Retinomax K-Plus 3, and spherical and cylindrical values ​​were recorded. Results: The mean age of the patients was 11.02 ± 2.1. Mean spherical equivalents were Canon RKF1 autorefractometer +0.045±2.49, Nidek TonoRef III +0.023±2.48, Retinomax K-Plus 3 +0.078±1.42, Plusoptix A09 -0.119±2.20, retinoscopy +0.124±2.65. Mean cylindrical values ​​were Canon RK-F1 autorefractometer -0.893±0.69, Nidek TonoRef III -0.927±0.72, Retinomax K-Plus 3 -0.888±0.73, Plusoptix A09 -0.883±0.719, retinoscopy -0.923±0.71. Statistical values ​​compared with retinoscopy; Canon RKF1 spherical equivalent (p=0.376), cylindrical (p= 0.515), Nidek TonoRef III spherical equivalent (p=0.485), cylindrical (p=0.198), Retinomax K-Plus 3 spherical equivalent (p=0.141), cylindrical (p=0.058), Plusoptix A09 spherical equivalent (p=0.085) and cylindrical (p=0.086) values ​​were not different. Conclusions: In spherical and cylindrical refractive error detection, all 4 devices showed reasonable and consistent results compared to retinoscopy.