Exploring the do-it-yourself approach in subjective refraction.

ABSTRACT:

Purpose

To evaluate the precision and accuracy of a novel do-it-yourself (DIY) subjective refraction technique utilizing a manual tunable spherical lens and an adjustable astigmatic lens.

Methods

Sixty-six participants performed three self-refraction measurements using a DIY approach, while an optometrist conducted one measurement using the traditional subjective refraction methodology. The DIY approach relied on power vector analysis, where a tunable spherical lens and an adjustable astigmatic lens (Stokes lens), aligned to the participant's eye, were rotated to obtain measurements. The study assessed refractive error, visual acuity, and required measurement time. Repeatability was evaluated using the coefficient of repeatability, and agreement between methods was analyzed

SUBMITTER: Salvador-Roger R 

PROVIDER: S-EPMC12530553 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature