The Ohio Contrast Cards: Visual Performance in a Pediatric Low-vision Site.

ABSTRACT:

Significance

This report describes the first clinical use of the Ohio Contrast Cards, a new test that measures the maximum spatial contrast sensitivity of low-vision patients who cannot recognize and identify optotypes and for whom the spatial frequency of maximum contrast sensitivity is unknown.

Purpose

To compare measurements of the Ohio Contrast Cards to measurements of three other vision tests and a vision-related quality-of-life questionnaire obtained on partially sighted students at Ohio State School for the Blind.

Methods

The Ohio Contrast Cards show printed square-wave gratings at very low spatial frequency (0.15 cycle/degree). The patient looks to the left/right side of the card containing the grating. Twenty-five students (13 to 20 years old) provided four m

SUBMITTER: Hopkins GR 

PROVIDER: S-EPMC5626115 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature