FIAT: A Device for Objective, Optical Measures of Accommodation in Phakic and Pseudophakic Eyes.

ABSTRACT:

Purpose

To present FIAT, a novel optical instrument and analysis package that is designed to elicit and optically record accommodation in human eyes.

Methods

FIAT employs a Shack-Hartmann wavefront sensor and a retro-illumination pupil camera that records from a single eye at video rates. It is effective at eliciting accommodation by offering the subject a full-field binocular view of an alternating distant target and a near-eye display. FIAT analysis software computes wave aberrations for each video frame over full- or subpupil sizes and computes accommodative dynamics and accommodative range.

Results

The system is validated by showing accurate refraction measurements in model eyes and human eyes with trial lenses. Robust accommodative responses are shown for young e

SUBMITTER: Roorda A 

PROVIDER: S-EPMC9836010 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature