Training to refract with Vmax Vision’s Voice Assisted Subjective Refractor (VASR), which uses wavefront aberrometry and artificial intelligence, may be easier than training to refract using a phoropter but with similar refractive outcomes, a study from Southern College of Optometry (SCO) suggests.
After a masked investigator examined 50 healthy subjects using a standard autorefractor, SCO faculty members did subjective refinement using a standard phoropter. Meanwhile, a second-year optometry student, after two hours of training, did subjective measurements with VASR.
There was no statistically significant difference in the mean equivalent sphere measurements between the phoropter and VASR. With VASR, Snellen acuity was better by more than one line in 14% of individuals, worse by more than one line in 3% of subjects, and less than one line of difference in 83% of individuals.