An implementation of Bubble Magnification did not improve the video comprehension of individuals with central vision loss.

ABSTRACT:

Purpose

People with central vision loss (CVL) watch television, videos and movies, but often report difficulty and have reduced video comprehension. An approach to assist viewing videos is electronic magnification of the video itself, such as Bubble Magnification.

Methods

We created a Bubble Magnification technique that displayed a magnified segment around the centre of interest (COI) as determined by the gaze of participants with normal vision. The 15 participants with CVL viewed video clips shown with 2× and 3× Bubble Magnification, and unedited. We measured video comprehension and gaze coherence.

Results

Video comprehension was significantly worse with both 2× (p = 0.01) and 3× Bubble Magnification (p < 0.001) than the unedited video. There was no difference in gaz

SUBMITTER: Costela FM 

PROVIDER: S-EPMC8217304 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature