Results 41 to 50 of about 336,794 (287)

Imaging Quality and Fatigue Quantification of Ocular Optical System

IEEE Access, 2020
Human eye is a special kind of optical system, and its imaging quality and fatigue level seem susceptible to the illumination. In this study we were sought to develop a novel method to quantify ocular fatigue more accurately, and to assess the influence ...
Jianqi Cai, Wentao Hao, Shanshan Zeng, Ya Guo, Rongrong Wen   +4 more
doaj   +1 more source

Dynamic accommodation measurement using Purkinje reflections and machine learning

Scientific Reports, 2023
Quantifying eye movement is important for diagnosing various neurological and ocular diseases as well as AR/VR displays. We developed a simple setup for real-time dynamic gaze tracking and accommodation measurements based on Purkinje reflections, which ...
Faik Ozan Ozhan, Ugur Aygun, Afsun Sahin, Hakan Urey   +3 more
doaj   +1 more source

Statistical Model of Ocular Wavefronts With Accommodation

Investigative Ophthalmology & Visual Science
The purpose of this study was to determine the minimum number of orthonormal basis functions, applying Principal Component Analysis (PCA), to represent the most wavefront aberrations at different accommodation stages. The study also aims to generate synthetic wavefront data using these functions.Monocular wavefront data from 191 subjects (26.15 ± 5.56 ...
Mechó-García, María, Arcas-Carbonell, María, Orduna-Hospital, Elvira, Sánchez-Cano, Ana, López-Gil, Norberto, Macedo-de-Araújo, Rute J., Faria-Ribeiro, Miguel, Fernandes, Paulo, González-Méijome, José Manuel, Rozema, Jos   +9 more
openaire   +6 more sources

Exercise Capacity, Physical Activity, Fatigue, and Neurocognitive Function in Adult Survivors of Childhood Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Adult survivors of childhood acute lymphoblastic leukemia (ALL) are at risk of reduced exercise capacity, decreased physical activity levels, persistent fatigue, and neurocognitive deficits. The aim was to investigate exercise capacity and physical activity levels of adult survivors of childhood ALL and their associations with ...
Laura Jess, Gustaf Glavå, Simon Skau, Hans‐Georg Kuhn, Maria Bäck, Marianne Jarfelt   +5 more
wiley   +1 more source

Ocular optical quality dynamics during accommodation in subjects with accommodative dysfunctions [PDF]

, 2019
Complaints of blurred distance vision after performing a near-vision task are common in the optometric practice. Several of these subjects showed no alterations in the optometric tests that are normally performed.
Franco, Sandra, Gomes, Jessica
core   +2 more sources

Does methylphenidate treatment affect functional and structural ocular parameters in patients with attention deficit hyperactivity disorder? - A prospective, one year follow-up study

Indian Journal of Ophthalmology, 2022
Purpose: Methylphenidate hydrochloride, which blocks the reuptake mechanisms of dopamine and norepinephrine, is used in attention deficit hyperactivity disorder (ADHD) treatment. Methylphenidate has many general side effects including ocular findings. In
Pınar Bingöl-Kızıltunç, Esra Yürümez, Huban Atilla   +2 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida, Gisela Cristiane Miyamoto, Daniel da Costa Torres, Ian Setubal Reis Chaves, Jonas do Carmo Paschoalin, Braúlio Lima Nascimento, Luciana Dias Chiavegato   +6 more
wiley   +1 more source

Influence of orthokeratology lenses on the state of accommodative function in children with myopia

Zaporožskij Medicinskij Žurnal, 2014
Aim. It was showed that optimal optical correction have positive effect on the accommodative apparatus of the myopic eye. Absolute and relative accommodation reserves, the nearest point of clear vision in 50 patients (100 eyes) with mild myopia was ...
T. E. Tsybulskaya
doaj   +1 more source

Ocular accommodation does take place under the Maxwellian view observation method

, 2023
This data is the ocular refraction and pupil diameter data accumulated in the "Ocular accommodation does take place under the Maxwellian view observation method.” We hope that this will help researchers study the response of the pupil to ocular ...
Masakazu Hirota
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source