Pattern-reversal visual evoked potentials in prosthetic vision and simulated visual reduction.

ABSTRACT:

Objective

To quantitatively evaluate visual evoked potentials (VEPs) in prosthetic vision and simulated visual reduction.

Methods and analysis

Four blind patients implanted with the Argus II retinal prosthesis and seven sighted controls participated. VEPs were recorded with pattern-reversal stimuli (2 cycles of a horizontal square wave grating, 0.1 cycle/degree) at 1.07 reversals per second (rps) for Argus II subjects and 3.37 rps for controls. Argus II patients had both eyes patched, viewing the pattern solely through their implant. Controls viewed the pattern monocularly, either with their best-corrected vision or with simulated visual reduction (field restriction, added blur or reduced display contrast).

Results

VEPs recorded in Argus II patients displayed a simila

SUBMITTER: He Y 

PROVIDER: S-EPMC11308878 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature