Sharmin, N.; Papadogiannis, P.; Romashchenko, D.; Lundström, L.; Vohnsen, B. Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens. Appl. Sci.2023, 13, 8645.
Sharmin, N.; Papadogiannis, P.; Romashchenko, D.; Lundström, L.; Vohnsen, B. Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens. Appl. Sci. 2023, 13, 8645.
Sharmin, N.; Papadogiannis, P.; Romashchenko, D.; Lundström, L.; Vohnsen, B. Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens. Appl. Sci.2023, 13, 8645.
Sharmin, N.; Papadogiannis, P.; Romashchenko, D.; Lundström, L.; Vohnsen, B. Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable Lens. Appl. Sci. 2023, 13, 8645.
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 degree 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 of ocular aberrations up to and including the 4th radial order across a 3 mm pupil at 20 Hz. Our findings show a significant reduction in accommodative response with increased radial eccentricity.
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