Parafoveal and Perifoveal Accommodation Response to Defocus Changes Induced by a Tunable LensShow others and affiliations
2023 (English)In: Applied Sciences, E-ISSN 2076-3417, Vol. 13, no 15, p. 8645-, article id 8645Article in journal (Refereed) Published
Abstract [en]
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 & DEG; 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.
Place, publisher, year, edition, pages
MDPI AG , 2023. Vol. 13, no 15, p. 8645-, article id 8645
Keywords [en]
accommodation, sign of defocus, aberrations, wavefront sensor, tunable lens, parafovea, perifovea, emmetropization, myopia
National Category
Ophthalmology
Identifiers
URN: urn:nbn:se:kth:diva-334747DOI: 10.3390/app13158645ISI: 001045414600001Scopus ID: 2-s2.0-85167890802OAI: oai:DiVA.org:kth-334747DiVA, id: diva2:1791151
Note
QC 20230824
2023-08-242023-08-242023-08-24Bibliographically approved