Object detection in the ring scotoma of a monocular bioptic telescope.

ABSTRACT:

Objective

To evaluate the ability of the fellow eye to detect stimuli in the area corresponding to the ring scotoma (blind area) of a monocular bioptic telescope in simple conditions (conventional perimetry) and in more visually demanding conditions.

Methods

A computerized dichoptic perimeter enabled separate stimuli to be presented to each eye of 7 bioptic users and 7 nonusers. The bioptic ring scotoma was mapped by presenting the stimulus to the telescope eye only. Detection tests were then conducted under binocular viewing, with stimuli presented only to the fellow eye in a 2 × 2 × 2 design with or without telescope, on plain gray or patterned (spatial noise) background, and with passive (looking at cross) or active (reading letters) fixation task.

Results

No signi

SUBMITTER: Doherty AL 

PROVIDER: S-EPMC3092125 | biostudies-literature | 2011 May

REPOSITORIES: biostudies-literature