Results 21 to 30 of about 416,062 (330)
Pupillary Light Reflex Induced by Two-Photon Vision
Investigative Ophthalmology and Visual Science, 2021 Purpose Two-photon vision relies on the perception of pulsed infrared light due to two-photon absorption in visual pigments. This study aimed to measure human pupil reaction caused by a two-photon 1040-nm stimulus and compare it with pupil responses ...
Agnieszka Zielińska +3 more
semanticscholar +1 more source
The pupillary light reflex distinguishes between circadian and non-circadian delayed sleep phase disorder (DSPD) phenotypes in young adults. [PDF]
PLoS ONE, 2018 This study investigated the utility of the pupillary light reflex as a method of differentiating DSPD patients with delayed melatonin timing relative to desired/required sleep time (circadian type) and those with non-delayed melatonin timing (non ...
Elise M McGlashan +6 more
doaj +1 more source
Pupillary reflex disorders in strabismic amblyopia with concomitant alternating squint
Российский офтальмологический журнал, 2022 Purpose. To study pupillary reflexes (pupillary cycle time and pupillary reaction — V) in patients with strabismic amblyopia and concomitant alternating strabismus. Material and methods.
A. I. Berdibaeva, V. A. Usenko
doaj +1 more source
Cortical modulation of pupillary function: systematic review [PDF]
PeerJ, 2019 Background The pupillary light reflex is the main mechanism that regulates the pupillary diameter; it is controlled by the autonomic system and mediated by subcortical pathways.
Costanza Peinkhofer +3 more
doaj +2 more sources
A high-resolution binocular video-oculography system: assessment of pupillary light reflex and detection of an early incomplete blink and an upward eye movement [PDF]
, 2015 Background: The pupillary light reflex characterizes the direct and consensual response of the eye to the perceived brightness of a stimulus. It has been used as indicator of both neurological and optic nerve pathologies. As with other eye reflexes, this
Espinosa Tomás, Julián +3 more
core +2 more sources
Estimation of operators’ fatigue using optical methods for determination of pupil activity
International Journal of Occupational Medicine and Environmental Health, 2015 Introduction The purpose of this study was to develop and initially validate an objective, yet quick, method for assessment of human fatigue. This aim can be achieved by the use of an optical, non-contact method of analysis of pupil activity.
Krzysztof Różanowski +2 more
doaj +1 more source
Journal of Child Psychology and Psychiatry and Allied Disciplines, 2021 BACKGROUND Measures based on pupillometry, such as the pupillary light reflex (PLR) and baseline pupil size, reflect physiological responses linked to specific neural circuits that have been implicated as atypical in some psychiatric and ...
A. Portugal +7 more
semanticscholar +1 more source
Physiological Research, 2021 It is assumed that the Attention Deficit Hyperactivity Disorder is associated with the central autonomic dysregulation, however, the studies are rare. Analysis of pupillary light reflex represents a non-invasive tool to provide information related to the
A. Hamrakova +9 more
semanticscholar +1 more source
Scientific Reports, 2021 This study described the development of a haploscope-based pupillometer for the parametrization of the Pupillary Light Reflex (PLR), and its feasibility in a set of 30 healthy subjects (light or dark-colored irides) and five patients diagnosed with ...
N. S. K. Meethal +6 more
semanticscholar +1 more source
PLoS ONE, 2019 We evaluated whether the pupillary light reflex is altered in benign essential blepharospasm patients. Twenty-three patients with benign essential blepharospasm, 47 with reflex blepharospasm, and 29 dry eye disease controls were included. Pupillary light
Yong-Soo Byun +3 more
doaj +1 more source