Results 61 to 70 of about 2,583,441 (289)

Spatial frequency channels depend on stimulus bandwidth in normal and amblyopic vision: an exploratory factor analysis

Frontiers in Computational Neuroscience, 2023
The Contrast Sensitivity Function (CSF) is the measure of an observer’s contrast sensitivity as a function of spatial frequency. It is a sensitive measure to assess visual function in fundamental and clinical settings.
Alexandre Reynaud, Alexandre Reynaud, Seung Hyun Min   +2 more
doaj   +1 more source

Optimal measurement of visual motion across spatial and temporal scales [PDF]

, 2014
Sensory systems use limited resources to mediate the perception of a great variety of objects and events. Here a normative framework is presented for exploring how the problem of efficient allocation of resources can be solved in visual perception ...
A Gorban, A Gorban, A Jones, AB Watson, AJ Doorn van, AJ Doorn van, B Krekelberg, B Sakitt, CW Gardiner, CWG Clifford, D Gabor, D Marr, DH Kelly, DH Kelly, DJ Field, DM MacKay, DO Hebb, EL Bienenstock, EP Simoncelli, ET Jaynes, G Bi, HL Resnikoff, JG Daugman, K Nakayama, LA Lesmes, M Kubovy, M Vergassola, M Wertheimer, MJ Wainwright, MS Landy, O Paulsen, P Burt, P Jurica, RD Luce, S Gepshtein, S Gepshtein, S Gepshtein, S Gepshtein, S Gepshtein, S Marcelja, S Saremi, SB Laughlin, SB Laughlin, TM Cover, VD Glezer, Y Weiss, Y Yeshurun, Y Yeshurun   +47 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Effect of the color of the intraocular lens on optical and visual quality

Indian Journal of Ophthalmology, 2014
Purpose: To analyze the optical quality of intraocular lenses (IOL) with an orange (PC440Y) and a yellow (SN60AT) filter, and correlate these results with the visual quality of patients with these implants. Setting: Fisabio Oftalmologνa Mιdica, Valencia,
M Amparo Díez-Ajenjo, M Carmen García-Domene, Cristina Peris-Martínez, José M Artigas, Adelina Felipe   +4 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Association Between Cataract and Visual Function in Elderly Patients at Rethabile Health Centre in Capricorn District, Limpopo Province, South Africa

Proceedings
Background: Owing to aging, the human eye goes through changes, which include theloss of transparency of the crystalline lens, a clear structure inside the eye that is responsiblefor clarity of vision by focusing light rays onto the retina. [...]
Makombela Moses Moshe, Mashala Dimakatso Given, Mathebula Solani David   +2 more
doaj   +1 more source

Novel surgical technique for the management of partial cryptophthalmos

Indian Journal of Ophthalmology, 2014
We report a case of a 2-month-old baby with bilateral nonsyndromic partial cryptophthalmos presenting with upper eyelid incomplete development and fusion to the cornea with resultant inability to close the eyes. He was managed successfully with bilateral
Ramesh Murthy, Himika Gupta
doaj   +1 more source

Visual Functions and Interocular Interactions in Anisometropic Children with and without Amblyopia [PDF]

, 2011
Purpose.: In uncorrected anisometropia, protracted dichoptic stimulation may result in interocular inhibition, which may be a contributing factor in amblyopia development.
Alexander, J., He, M., Lai, X. J., Suttle, C. M., Yang, Z.   +4 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Evaluation of contrast sensitivity and other visual function outcomes in neovascular age-related macular degeneration patients after treatment switch to aflibercept from ranibizumab

Clinical Ophthalmology, 2017
Donald R Nixon, Nicholas AP Flinn Trimed Eye Center, Barrie, ON, Canada Purpose: This study evaluated visual function and anatomic and vision-related quality-of-life outcomes in recalcitrant neovascular age-related macular degeneration (AMD) subjects ...
Nixon DR, Flinn NAP
doaj