Results 291 to 300 of about 420,660 (342)

Dynamics of Accommodative Behavior Under Prolonged Viewing of Electronic Devices in Young Adults. [PDF]

Invest Ophthalmol Vis Sci
Sah RP, Meyer D, Kollbaum P.
europepmc   +1 more source

A Comparison of Accommodative Ability in Healthy Controls, Diabetics, and Healthy Subjects with a Family History of Diabetes. [PDF]

Br Ir Orthopt J
Rout S, Radhakrishnan A.
europepmc   +1 more source

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Ocular Accommodation in Human Infants

Optometry and Vision Science, 1983
The present longitudinal investigation evaluated the proficiency of the human ocular accommodation system during the 20-week period after birth. Fourteen human infants were tested at specific intervals during the age of 2 through 20 weeks. At each age the refractive state of the eyes during fixation of a vertical-striped, high-contrast stimulus pattern
K. Brookman
semanticscholar   +3 more sources

Perceptual detectability of ocular accommodation microfluctuations.

Journal of the Optical Society of America A, 1989
When the eye fixates a stationary stimulus, the power of the lens is known to change rapidly and continuously. Although the basic characteristics of this fluctuating activity are known and the influencing factors have been identified, their exact role in the control of accommodation is uncertain. It is thought that, for the fluctuations to be useful, a
B. Winn, W. Charman, J. Pugh, Gordon Heron, A. Eadie   +4 more
semanticscholar   +3 more sources

Ocular accommodation, personality, and autonomic balance.

Optometry and Vision Science, 1983
The autonomic nervous system is made up of two subsystems: the parasympathetic (PNS) and the sympathetic (SNS). The balance between these systems regulates bodily functions during routine (PNS-dominant) and crisis (SNS-dominant) situations. It may also control visual accommodation: PNS activation for inward focus, and SNS activation for outward focus ...
V. Gawron
semanticscholar   +3 more sources

Arterial pulse modulates steady-state ocular accommodation.

Current Eye Research, 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: low frequency of less than 0.6 Hz and high frequency between 1.0-2.3Hz.
B. Winn, J. Pugh, B. Gilmartin, H. Owens
semanticscholar   +3 more sources

Autonomic correlates of ocular accommodation and cardiovascular function

Ophthalmic and Physiological Optics, 2009
AbstractPurpose:  To evaluate the hypothesis that objective measures of open‐ and closed‐loop ocular accommodation are related to systemic cardiovascular function, and ipso facto autonomic nervous system activity.Methods:  Sixty subjects (29 male; 31 female) varying in age from 18 to 33 years (average: 20.3 ± 2.9 years) with a range of refractive ...
L. N. Davies, J. Wolffsohn, B. Gilmartin
semanticscholar   +3 more sources

Accommodative response to ocular surface pain

Clinical and Experimental Optometry, 2021
The discovery of an accommodative response to ocular surface stimulation could inform clinicians and patients that optical effects may occur due to ocular discomfort and perhaps an assessment of the accommodative system after carrying out interventions impacting the ocular surface, may be warranted.There have been no previous reports evaluating the ...
Emmanuel B Alabi, Trefford L Simpson
openaire   +2 more sources