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- Title
Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens.
- Authors
Sharmin, Najnin; Papadogiannis, Petros; Romashchenko, Dmitry; Lundström, Linda; Vohnsen, Brian
- Abstract
The accommodative response of the human eye is predominantly driven by foveal vision, but reacts also to off-foveal stimuli. Here, we report on monocular accommodation measurements using parafoveal and perifoveal annular stimuli centered around the fovea and extending up to 8° radial eccentricity for young emmetropic and myopic subjects. The stimuli were presented through a sequence of random defocus step changes induced by a pupil-conjugated tunable lens. A Hartmann–Shack wavefront sensor with an infrared beacon was used to measure real-time changes in ocular aberrations up to and including the fourth radial order across a 3 mm pupil at 20 Hz. Our findings show a significant reduction in accommodative response with increased radial eccentricity.
- Subjects
OPTICAL aberrations; WAVEFRONT sensors; MONOCULARS; VISION
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 15, p8645
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13158645