Pediatric Perimeter-A Novel Device to Measure Visual Fields in Infants and Patients with Special Needs.

ABSTRACT:

Purpose

There are no commercially available devices to measure visual fields in infants. We developed a device, "Pediatric Perimeter," that quantifies visual field extent (VFE) for infants. We describe the construction, validation, and use of this device.

Methods

A hemispherical dome with light emitting diodes (LEDs) was constructed. The LEDs were controlled using a computer program to measure reaction time (RT) to gross visual fields (GVF) and the VFE. Participants were tested in supine position in a dark room. Eye or head movement towards the stimuli was monitored with an infrared (IR) camera. Validation was done on 10 adults (mean age: 24.4 ± 5 years) with tunnel vision simulator.

Results

Perimetry was performed on 19 infants (age: 2.3-12 months), five infants with

SUBMITTER: Satgunam P 

PROVIDER: S-EPMC5497602 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature