Results 31 to 40 of about 314,600 (296)
Arterial pulse modulates steady-state ocular accommodation
, 1990 Rapid and continuous fluctuations in ocular focus are known to occur when the eye views a stationary target. The advent of high-speed infra-red optometers has established that these microfluctuations of ocular accommodation have two dominant components ...
Owens, H. +3 more
core +1 more source
Measurement of monochromatic ocular aberrations of human eyes as a function of accommodation by the howland aberroscope technique [PDF]
, 1995 Further development of the objective version of the Howland and Howland [1976] Science, 193, 580–582; (1977) Journal of the Optical Society of America, 67, 1508–1518] aberroscope technique for measuring ocular aberrations is described.
Wildsoet, Christine F. +4 more
core +1 more source
Imaging Quality and Fatigue Quantification of Ocular Optical System
IEEE Access, 2020 Human eye is a special kind of optical system, and its imaging quality and fatigue level seem susceptible to the illumination. In this study we were sought to develop a novel method to quantify ocular fatigue more accurately, and to assess the influence ...
Jianqi Cai +4 more
doaj +1 more source
Dynamic accommodation measurement using Purkinje reflections and machine learning
Scientific Reports, 2023 Quantifying eye movement is important for diagnosing various neurological and ocular diseases as well as AR/VR displays. We developed a simple setup for real-time dynamic gaze tracking and accommodation measurements based on Purkinje reflections, which ...
Faik Ozan Ozhan +3 more
doaj +1 more source
The influence of downward gaze and accommodation on ocular aberrations over time
, 2011 *This article is free to read on the publisher's website*\ud \ud A Shack–Hartmann wavefront sensor was modified to allow measurement of ocular aberrations in downward gaze with binocular fixation.
Collins, Michael +9 more
core +1 more source
Influence of orthokeratology lenses on the state of accommodative function in children with myopia
Zaporožskij Medicinskij Žurnal, 2014 Aim. It was showed that optimal optical correction have positive effect on the accommodative apparatus of the myopic eye. Absolute and relative accommodation reserves, the nearest point of clear vision in 50 patients (100 eyes) with mild myopia was ...
T. E. Tsybulskaya
doaj +1 more source
Indian Journal of Ophthalmology, 2022 Purpose: Methylphenidate hydrochloride, which blocks the reuptake mechanisms of dopamine and norepinephrine, is used in attention deficit hyperactivity disorder (ADHD) treatment. Methylphenidate has many general side effects including ocular findings. In
Pınar Bingöl-Kızıltunç +2 more
doaj +1 more source
Acceleration characteristics of human ocular accommodation
Vision Research, 2005 Position and velocity of accommodation are known to increase with stimulus magnitude, however, little is known about acceleration properties. We investigated three acceleration properties: peak acceleration, time-to-peak acceleration and total duration of acceleration to step changes in defocus.
Bharadwaj, Shrikant R. +1 more
openaire +2 more sources
Age-Related changes in ocular aberrations with accommodation
Journal of Vision, 2007 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.
Radhakrishnan, Hema; id_orcid 0000-0002-8898-2453 +1 more
openaire +4 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Shwachman–Diamond syndrome (SDS) is a rare autosomal recessive ribosomopathy characterized by bone marrow failure and multisystem involvement, with emerging evidence of associated neurocognitive impairment. Methods We conducted a retrospective study of 240 individuals with biallelic Shwachman–Bodian–Diamond syndrome (SBDS) mutations
Jane Koo +11 more
wiley +1 more source