Results 121 to 130 of about 60,803 (278)

Evidence for increased background neural noise in migraine with aura: Hyperactive but not hyperresponsive

Headache: The Journal of Head and Face Pain, EarlyView.
Abstract Objective This study had two aims: (1) to investigate the contrast gain in migraine and compare it to that in photosensitive epilepsy; (2) to explore any effects of colored spectacles (precision ophthalmic tints [POT]) on contrast gain. Background Individuals with migraine with aura (MA) typically show high amplitude electrophysiological ...
Louise O'Hare, Paul B. Hibbard, Arnold J. Wilkins   +2 more
wiley   +1 more source

Revisiting PSF models: Unifying framework and high‐performance implementation

Journal of Microscopy, EarlyView.
Abstract Localisation microscopy often relies on detailed models of point‐spread functions. For applications such as deconvolution or PSF engineering, accurate models for light propagation in imaging systems with a high numerical aperture are required. Different models have been proposed based on 2D Fourier transforms or 1D Bessel integrals.
Yan Liu, Vasiliki Stergiopoulou, Jonathan Chuah, Eric Bezzam, Gert‐Jan Both, Michael Unser, Daniel Sage, Jonathan Dong   +7 more
wiley   +1 more source

Predicting patient‐reported quality of vision through multifocal optics

Ophthalmic and Physiological Optics, EarlyView.
Abstract Purpose To explore the agreement between computationally modelled point‐spread functions (PSFs) and multifocal soft contact lens wearers' descriptions of image quality. Methods In Phase 1, participants were fitted with a single vision soft contact lens (SCL) in the left eye, and four different multifocal (MF) SCLs in the right eye in ...
Pete Kollbaum, Dawn Meyer, Nitya Murthy, Javier Gantes‐Nunez, Matt Jaskulski, Martin Rickert   +5 more
wiley   +1 more source

The QuickSee autorefractor reliably measures the accommodative response in children compared with the Shin‐Nippon autorefractor

Ophthalmic and Physiological Optics, EarlyView.
Abstract Introduction This study evaluated the QuickSee autorefractor for measurement of the accommodative response in a cohort of children without significant ametropia, and compared the findings to those determined using the gold‐standard Shin‐Nippon device. Methods Children aged 5–7 years were recruited.
Jane M. Fulton, Rebecca E. Leighton, Tuyishime Didier Fidele Uwacu, Bruce Moore, Julie‐Anne Little   +4 more
wiley   +1 more source

Repeatability of total Keratometry and standard Keratometry by the IOLMaster 700 and comparison to total corneal astigmatism by Scheimpflug imaging

Eye, 2020
G. Savini, Leonardo Taroni, Domenico Schiano-Lomoriello, K. Hoffer   +3 more
semanticscholar   +1 more source

Ocular surface characteristics and its association with soft contact lens fitting

Ophthalmic and Physiological Optics, EarlyView.
Abstract Purpose To analyse the associations between ocular surface shape parameters and soft contact lens fitting. Methods A total of 106 eyes of 53 participants (53 right and 53 left eyes) fitted with standard silicone hydrogel soft lenses were analysed retrospectively.
Javier Rojas Viñuela, James S. Wolffsohn, Alejandra Consejo, Eef van der Worp, David P. Piñero   +4 more
wiley   +1 more source

Accuracy and precision of a sphero‐cylindrical over‐refraction app for smartphones

Ophthalmic and Physiological Optics, EarlyView.
Abstract Purpose To evaluate the accuracy and precision of a web‐based smartphone app designed to measure sphero‐cylindrical over‐refraction. Methods A total of 307 healthy young subjects (22.5 ± 3.4 years) underwent clinical subjective refraction. In addition to each subject's refractive correction, spherical and cylindrical errors from −1.50 to 0.00 ...
Rosa Maria Salmeron‐Campillo, Gines Martinez‐Ros, Jose Angel Diaz‐Guirado, Carmen Travel‐Alarcon, Mateusz Jaskulski, Norberto Lopez‐Gil   +5 more
wiley   +1 more source

Experience of phakic lens implantation for the correction of myopia and astigmatism: feature of preoperative examination and lens parameters

, 2023
Б. В. Лаптев, A.B. Lapteva, A.Y. Renzyak   +2 more
openalex   +1 more source

Factors predicting myopia incidence in China and Europe

Ophthalmic and Physiological Optics, EarlyView.
Abstract Aims To develop a predictive model for myopia incidence using population‐based data from Chinese and European children. Methods Analysis of four longitudinal studies from the UK, Sweden and China was conducted. Data from 4405 non‐myopic children aged 6 to 16.8 years with spherical equivalent (SE) refraction from −0.49 D to +10.00 D were ...
Nina Tahhan, Xiangui He, Kathryn Saunders, Pelsin Demir, Rebecca Leighton, Sara McCullough, Karthikeyan Baskaran, Antonio Filipe Macedo, Xun Xu, Padmaja Sankaridurg, Thomas Naduvilath   +10 more
wiley   +1 more source

Impact of central corneal astigmatism on postoperative visual outcomes in patients undergoing trifocal intraocular lens implantation

BMC Ophthalmology
Background To investigate the impact of central corneal astigmatism on postoperative visual outcomes in patients with trifocal intraocular lens (IOL) implantation.
Lan Wang, Jiaqi Meng, Jiao Qi, Dongling Guo, Yi Lu, Xiangjia Zhu   +5 more
doaj   +1 more source