Development and Validation of a Smartphone-based Contrast Sensitivity Test.

ABSTRACT:

Purpose

Contrast sensitivity (CS) testing is an important measure of visual function reflecting variations in everyday visual experience in different conditions and helps to identify more subtle vision loss. However, it is only infrequently used. To make this more accessible, we have developed and validated a smartphone-based CS test.

Methods

A new tumbling-E smartphone-based CS test was developed, Peek Contrast Sensitivity (PeekCS). This was field tested and refined through several iterations. Reference standard was a tumbling-E Pelli-Robson CS test (PRCS). The validation study was conducted in community clinics in Ethiopia. Test-retest variability was measured for both PRCS and PeekCS. PRCS and PeekCS were then compared. Correlation coefficients and 95% confidence interval

SUBMITTER: Habtamu E 

PROVIDER: S-EPMC6743644 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature