Nevin Manimala Statistics

Clinical Comparison of High-Resolution and Standard Refractions and Prescriptions

Optom Vis Sci. 2023 Oct 20. doi: 10.1097/OPX.0000000000002076. Online ahead of print.


SIGNIFICANCE: Recently, novel refraction and lens manufacturing technology claims to provide more efficient, higher-resolution refractions and resulting lenses. It is unclear, however, if these benefits are realized and appreciated by the patient.

PURPOSE: This study investigated benefits and drawbacks of high-resolution refraction technology over standard, specifically in terms of the refraction, glasses prescription, and participant’s perceptions of the technology.

METHODS: Sixty progressive addition lens (PAL) wearers (aged 35-70) and 60 single-vision (SV) wearers (age 18+) were randomized to a high-resolution refraction (Vision-R 800, and standard refraction in a 2-week crossover dispensing design. Refractive results were converted to M, J0 and J45 and analyzed using multivariate t-tests. Bayesian estimation was used to analyze differences between refraction type and age group for subjective outcomes.

RESULTS: Differences in refractive error between the two refractions were small and none differed statistically (P value > .05) or clinically (e.g., <0.25D) in either subgroup. Visual acuities at distance and near were better than 0.00 logMAR; none of the mean differences between the refractions reached statistical or clinical (e.g., <0.25D) significance. Participants significantly preferred the high-resolution refraction for its quickness and efficiency, improved comfort, and less stress. Bayesian analysis indicated a 76% probability that participants had higher confidence in the high-resolution refraction, 93% probability they would seek it out for their care, and 94% probability they would recommend an optometrist using this technology.

CONCLUSIONS: Refractive and acuity endpoints were similar with the high-resolution and standard refraction. Participants, however, perceived several key benefits of the high-resolution refraction and prescription for their care, the care of their friends/family, and the practice itself.

PMID:37861987 | DOI:10.1097/OPX.0000000000002076

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