Comparative accuracy of Plusoptix A16, Vision Screener V100, and Grand Seiko WAM-5500 autorefractors versus subjective refraction

Significant differences in refractive error measurements were observed between devices, with the Vision Screener V100 overestimating errors and the Grand Seiko WAM-5500 showing higher J0 values. Subjective refraction detected more with-the-rule astigmatism, highlighting the importance of validating autorefraction results, especially in high astigmatism cases. Age-related differences in M and J0 components highlight the need to confirm objective methods with subjective refraction.