Results 31 to 40 of about 42,815 (285)

Refractive Errors, Amplitude of Accommodation, and Myopia Progression in Kazakhstani Medical Students: 5-Year Follow-Up [PDF]

Journal of Clinical Medicine
Yuliya Semenova
exaly   +1 more source

Oscillator phase noise: a tutorial [PDF]

, 2000
Linear time-invariant (LTI) phase noise theories provide important qualitative design insights but are limited in their quantitative predictive power.
Hajimiri, Ali, Lee, Thomas H.
core   +1 more source

Comparison of the amplitude of accommodation determined subjectively and objectively in South African university students

African Vision and Eye Health, 2018
Background: Historically, two clinical methods have been used for measuring the amplitude of accommodation, which are the push-up and minus lens methods.
Solani D. Mathebula, Mologadi D. Ntsoane, Nkalebetja T. Makgaba, Khensani L. Landela   +3 more
doaj   +1 more source

Loss of amplitude of accommodation in pre-presbyopic HIV and AIDS patients under treatment with antiretrovirals

African Vision and Eye Health, 2017
Background: The prevalence of HIV and AIDS is causing an enormous public health burden. Its manifestations spare no organ. Ocular complications are mainly attributed to various opportunistic infections which are directly or indirectly caused by immune ...
Solani D. Mathebula, Prisilla S. Makunyane   +1 more
doaj   +1 more source

Clinical application of accommodating intraocular lens [PDF]

International Journal of Ophthalmology, 2018
The present review describes recent advances in application of accommodating intraocular lenses (AIOLs). Standard monofocal intraocular lenses (MIOLs) only correct distance vision, while AIOLs are designed to allow both good distance vision and near ...
You-Ling Liang, Song-Bai Jia
doaj   +1 more source

Changes in Lens Thickness and Amplitude of Accommodation with Age [PDF]

International Journal of Anatomy Radiology and Surgery, 2020
Introduction: The human crystalline lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina and, by changing shape, it adjusts focal distance and this function of the lens is
Farah Maqsood, Wafa Abdullah Alyahya
doaj   +1 more source

Random Changes of Accommodation Stimuli: An Automated Extension of the Flippers Accommodative Facility Test [PDF]

, 2018
Postprint (author's final ...
Aldaba Arévalo, Mikel, Díaz Douton, Fernando, López, Silvia, Otero Molins, Carles, Pujol Ramo, Jaume, Vera Diaz, Fuensanta   +5 more
core   +2 more sources

Creating effective focus cues in multi-plane 3D displays. [PDF]

, 2011
Focus cues are incorrect in conventional stereoscopic displays. This causes a dissociation of vergence and accommodation, which leads to visual fatigue and perceptual distortions.
Akeley, Kurt, BANKS, Martin S., Ravikumar, Sowmya   +2 more
core   +2 more sources

A comparison in university students of the amplitude of accommodation determined subjectively

African Vision and Eye Health, 2016
Background: Historically, the push-up and the minus lens methods have been used for the measurements of the amplitude of accommodation, and the differences between the results of these methods are well known.
Solani D. Mathebula, Tumisho M. Kekana, Martina M. Ledwaba, Danny N. Mushwana, Nthabiseng E. Malope   +4 more
doaj   +1 more source

Visual acuity, amplitude of accommodation and near point of convergence and academic achievement in primary school learners in Bloemfontein

African Vision and Eye Health, 2014
Introduction: Learning problems influencing the social and psychological development of children may result from poor visual acuity (VA), insufficient amplitude of accommodation and receded near point of convergence (NPC). This study assessed Grade 4 and
Mariette Nel, Stephen Hartley, Melissa Maartens, Carla Pheiffer, Monwabisi Nonkula, Anel Steyn   +5 more
doaj   +1 more source