Results 11 to 20 of about 12,436 (263)
The Effect of Accommodation on Peripheral Refraction under Two Illumination Conditions
Photonics, 2022 The clinical importance of peripheral refraction as a function of accommodation has become increasingly evident in the last years with special attention given to myopia control. Low order ocular aberrations were measured with a Hartmann–Shack aberrometer
Raquel van Ginkel +3 more
doaj +1 more source
Effects of prolonged continuous computer gaming on physical and ocular symptoms and binocular vision functions in young healthy individuals [PDF]
PeerJ, 2019 Background and Objective Addiction to computer gaming has become a social problem in Korea and elsewhere, and it has been enlisted as a mental health disorder by the World Health Organization.
Ji-Woo Lee +4 more
doaj +2 more sources
Accommodative Exercises to Lower Intraocular Pressure
Journal of Ophthalmology, 2020 Purpose. This study investigated how a conscious change in ocular accommodation affects intraocular pressure (IOP) and ocular biometrics in healthy adult volunteers of different ages. Methods. Thirty-five healthy volunteers without ocular disease or past
Thomas J. Stokkermans +6 more
doaj +1 more source
A covered eye fails to follow an object moving in depth
Scientific Reports, 2021 To clearly view approaching objects, the eyes rotate inward (vergence), and the intraocular lenses focus (accommodation). Current ocular control models assume both eyes are driven by unitary vergence and unitary accommodation commands that causally ...
Arvind Chandna +4 more
doaj +1 more source
Crystalline lens imaging during accommodation with a slit-scanning tomography system: preliminary results [PDF]
EPJ Web of Conferences, 2020 A slit-scanning tomography system previously developed in the Centre of Physics of University of Minho allows to capture images of the eye and posteriorly calculus of the biometric (thickness and curvature) and optical (wavefront aberrations) properties ...
Gomes Jessica, Franco Sandra
doaj +1 more source
On voluntary ocular accommodation [PDF]
Perception & Psychophysics, 1975 Young observers were challenged to induce a marked monocular accommodative response to a relatively weak accommodative stimulus by placing a-9 diopter contact lens on the eye. At first, observers could not produce the desired response, but with training, three of four subjects achieved criterion.
Robert R. Provine, Jay M. Enoch
openaire +1 more source
A geometric model of ocular accommodation
Vision Research, 2010 An exoteric geometric mechanics model of ocular accommodation is detailed to elucidate the main ideas of various ongoing modeling efforts. The present study derives solutions for the stretched state of the ocular lens as it might appear during accommodation by using simple geometric arguments and a volume constraint, rather than the more mathematically
Reilly, Matthew A., Ravi, Nathan
openaire +2 more sources
Mechanism of accommodation: A review of theoretical propositions
African Vision and Eye Health, 2015 Accommodation is the process by which the human eye changes its focus to see objects at varying distances from the eye. For nearly 300 years, scientists have investigated and presented various views on the mechanism of accommodation.
Godwin O. Ovenseri-Ogbomo +1 more
doaj +1 more source
Evaluation of ocular accommodation, convergence and fusional vergence changes during Ramadan [PDF]
Journal of Fasting and Health, 2013 Purpose: There are a few researches regarding the effects of Islamic fasting on visual system. The aim of this study was to investigate the effects of Ramadan fasting on the amplitude of accommodation (AA), near point of convergence (NPC), positive and ...
Seyed Hosein Hoseini-Yazdi +3 more
doaj +5 more sources
Journal of Optometry, 2009 Purpose: We studied the accuracy and precision of 32 objective wavefront methods for finding the amplitude of accommodation obtained in 180 eyes. Methods: Ocular accommodation was stimulated with 0.5 D steps in target vergence spanning the full range of ...
Norberto López-Gil +3 more
doaj +1 more source