منابع مشابه
Effect of accommodation on peripheral ocular aberrations.
Changes in peripheral aberrations, particularly higher order aberrations, as a function of accommodation have received little attention. Wavefront aberrations were measured for the right eyes of 9 young adult emmetropes at 38 field positions in the central 42 x 32 degrees of the visual field. Subjects accommodated monocularly to targets at vergences of either 0.3 or 4.0 D. Wavefront data for a ...
متن کاملHuman eyes do not need monochromatic aberrations for dynamic accommodation
PURPOSE To determine if human accommodation uses the eye's own monochromatic aberrations to track dynamic accommodative stimuli. METHODS Wavefront aberrations were measured while subjects monocularly viewed a monochromatic Maltese cross moving sinusoidally around 2D of accommodative demand with 1D amplitude at 0.2 Hz. The amplitude and phase (delay) of the accommodation response were compared...
متن کاملAccommodation with higher-order monochromatic aberrations corrected with adaptive optics.
Higher-order monochromatic aberrations in the human eye cause a difference in the appearance of stimuli at distances nearer and farther from best focus that could serve as a signed error signal for accommodation. We explored whether higher-order monochromatic aberrations affect the accommodative response to 0.5 D step changes in vergence in experiments in which these aberrations were either pre...
متن کاملAge-related changes in ocular aberrations with accommodation.
This study investigates the changes in aberrations with monocular accommodation as a function of age. Second-order and higher order wavefront aberrations and pupil size were measured as a function of accommodation demand over the range of 0-4 D in the right eyes of 47 normal subjects with ages between 17 and 56 years. Higher order ocular Zernike aberrations were analyzed for the natural pupil s...
متن کاملDynamic accommodation with simulated targets blurred with high order aberrations
High order aberrations have been suggested to play a role in determining the direction of accommodation. We have explored the effect of retinal blur induced by high order aberrations on dynamic accommodation by measuring the accommodative response to sinusoidal variations in accommodative demand (1-3D). The targets were blurred with 0.3 and 1mum (for a 3-mm pupil) of defocus, coma, trefoil and ...
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ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 2020
ISSN: 0816-4622,1444-0938
DOI: 10.1111/cxo.12938