Results 1 to 10 of about 416,062 (330)

PUPILLARY REFLEX AT EASE: A new instrument for the demonstration of Pupillary reflex [PDF]

Indian Journal of Ophthalmology
As ophthalmologists, we often come across a lot of patients with neuro-ophthalmological disorders that show no positive examination findings except for subtle abnormalities in the pupillary light reflex. However, these subtle changes are often overlooked
Allapitchai Fathima, Praveena Shyam, Shivam Gupta, Meenakshi Ravindran   +3 more
doaj   +3 more sources

Sonographic Consensual Pupillary Reflex [PDF]

Western Journal of Emergency Medicine, 2012
Patients suffering from severe orbital trauma are at risk for numerous complications, including orbital compartment syndromes. This can result in an afferent pupillary defect, which must be evaluated for on physical examination.
Jeffrey Wiswell, Venkatesh Bellamkonda-Athmaram   +1 more
doaj   +5 more sources

Pupillary light reflex of lamprey Petromyzon marinus [PDF]

Current Biology, 2021
The discoveries of the photopigment melanopsin and intrinsically photosensitive retinal ganglion cells (ipRGCs) have revealed novel mechanisms of light detection now known to control several kinds of non-image-forming vision, including regulation of mood, the circadian rhythm, and the pupillary light reflex (PLR). These remarkable discoveries have been
Morshedian, Ala, Huynh, Theodore Henry, Frederiksen, Rikard, Fain, Gordon L, Sampath, Alapakkam P   +4 more
openaire   +5 more sources

Searching for Complexity in the Human Pupillary Light Reflex

Mathematics, 2020
This article aims to examine the dynamical characteristics of the pupillary light reflex and to provide a contribution towards their explanation based on the nonlinear theory of dynamical systems.
Rosário D. Laureano, Diana Mendes, Clara Grácio, Fátima Laureano   +3 more
doaj   +2 more sources

A Novel Method for Measuring the Pupil Diameter and Pupillary Light Reflex of Healthy Volunteers and Patients With Intracranial Lesions Using a Newly Developed Pupilometer

Frontiers in Medicine, 2021
Background: Physicians currently measure the pupil diameter and the pupillary light reflex with visual observations using a ruler and a traditional penlight, leading to possibly inaccurate and subjective assessments.
Joji Kotani, Joji Kotani, Hiroyuki Nakao, Isamu Yamada, Isamu Yamada, Atsushi Miyawaki, Naomi Mambo, Yuko Ono   +7 more
doaj   +2 more sources

The Pupillary Light Reflex as a Biomarker of Concussion

Life, 2021
The size of our pupils changes continuously in response to variations in ambient light levels, a process known as the pupillary light reflex (PLR). The PLR is not a simple reflex as its function is modulated by cognitive brain function and any long-term ...
Frederick Robert Carrick, Sergio F. Azzolino, Melissa Hunfalvay, Guido Pagnacco, Elena Oggero, Ryan C. N. D’Arcy, Mahera Abdulrahman, Kiminobu Sugaya   +7 more
doaj   +2 more sources

Evaluation of Pupillary Light Reflex in Amblyopic Eyes Using Dynamic Pupillometry

Türk Oftalmoloji Dergisi, 2019
Objectives:To evaluate the pupillary light reflex responses in patients with unilateral strabismic and anisometropic amblyopia using dynamic pupillometry.Materials and Methods:A total of 102 eyes of 51 patients with unilateral amblyopia were included in ...
Gülfidan Bitirgen, Mohammed Daraghma, Ahmet Özkağnıcı   +2 more
doaj   +2 more sources

Enhanced pupillary light reflex in infancy is associated with autism diagnosis in toddlerhood

Nature Communications, 2018
Previous studies showed that children with autism spectrum disorder (ASD) have atypicalities in the pupillary light reflex (PLR). This study uses longitudinal monitoring of infants at risk for ASD to show that PLR magnitude at 10 months of age is ...
Pär Nyström, Teodora Gliga, Elisabeth Nilsson Jobs, Gustaf Gredebäck, Tony Charman, Mark H. Johnson, Sven Bölte, Terje Falck-Ytter   +7 more
doaj   +2 more sources

Quantitative assessments of pupillary light reflexes in neurocritically ill patients [PDF]

Journal of Neurocritical Care, 2022
The pupillary light reflex is a component of bedside neurological examinations in neurological intensive care units (neuroICUs). A quantitative pupillometer provides a non-invasive and objective pupil reactivity parameter clinically significant for ...
Tae Jung Kim
doaj   +1 more source

Pupil tracks statistical regularities: behavioral and neural implications [PDF]

Journal of Integrative Neuroscience, 2020
Pupillary light reflex adjusts the amount of light reaching the retina. Recent work suggests that the brainstem pupillary light reflex pathway is controlled by the environment's internal models derived from higher-order temporal statistics.
Shamini Warda, Shubham Pandey
doaj   +1 more source