Accuracy of a Smartphone-based Autorefractor Compared with Criterion-standard Refraction.

ABSTRACT:

Significance

Uncorrected refractive error is a prevalent problem throughout the world especially among the low-income population who have limited access to professional eye care and cannot afford eyeglasses.

Purpose

The purpose of this study was to evaluate the accuracy and usability of a low-cost, portable, smartphone-based autorefractor (Netra, EyeNetra Inc., Somerville, MA) in adults.

Methods

A cross-sectional study was conducted to compare the portable refractor with subjective (manifest and cycloplegic) refraction for sequential adult participants with best-corrected visual acuity of 20/40 or greater. For each method of refraction, the spherical equivalent was calculated. Differences between methods were tested with linear mixed regression models. A validated usa

SUBMITTER: Jeganathan VSE 

PROVIDER: S-EPMC6475906 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature