Results 41 to 50 of about 4,603,420 (293)

A mechanistic inter-species comparison of spatial contrast sensitivity [PDF]

, 2008
The validity of the Rovamo-Barten modulation transfer function model for describing spatial contrast sensitivity in vertebrates was examined using published data for the human, macaque, cat, goldfish, pigeon and rat.
Jarvis, John R., Wathes, Christopher M., Wathes, C M, Jarvis, J R, Wathes, C.M., Jarvis, J.   +5 more
core   +1 more source

Mapping the Contrast Sensitivity of the Visual Field With Bayesian Adaptive qVFM

Frontiers in Neuroscience, 2020
Current clinical evaluation, which focuses on central vision, could be improved through characterization of residual vision with peripheral testing of visual acuity, contrast sensitivity, color vision, crowding, and reading speed.
Pengjing Xu, Luis A. Lesmes, Deyue Yu, Zhong-Lin Lu, Zhong-Lin Lu, Zhong-Lin Lu   +5 more
doaj   +1 more source

Image quality optimization, via application of contextual contrast sensitivity and discrimination functions [PDF]

, 2015
What is the best luminance contrast weighting-function for image quality optimization? Traditionally measured contrast sensitivity functions (CSFs), have been often used as weighting-functions in image quality and difference metrics. Such weightings have
Fry, E., Edward Fry, Gupta, G., Triantaphillidou, S., Sophie Triantaphillidou, John Jarvis, Gaurav Gupta, Jarvis, J.   +7 more
core   +1 more source

Colour contrast sensitivity changes caused by peripheral retinal laser photocoagulation [PDF]

Eye, 1991
Macular phototoxicity is known to occur with laser use, and there is evidence that the wavelength of the light used influences this effect. In this study, a computer based colour contrast sensitivity test was used to assess the immediate macular effects of photocoagulation of peripheral flat retinal holes in otherwise normal retinas, using blue-green ...
C R, Canning, N, Strong, T A, Berninger, G B, Arden   +3 more
openaire   +2 more sources

Contrast sensitivity evaluation with filter contact lenses in patients with retinitis pigmentosa: a pilot study

Journal of Optometry, 2011
Purpose: The aim of this pilot study was to test whether retinitis pigmentosa patients would benefit from filter contact lenses as an effective optical aid against glare and photophobia.
Gonzalo Carracedo, Jesús Carballo, Elena Loma, Gema Felipe, Isabel Cacho   +4 more
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani, Rachel K. Peterson, Avani D. Rao, Laurie J. McKenzie, Ahmed Magdy Elmotayam, Leslie Chang, Michael Roth, Susan L. McGovern   +7 more
wiley   +1 more source

Color vision and contrast sensitivity changes in patient with primary angle closure and primary angle closure glaucoma

Oman Journal of Ophthalmology
PURPOSE: The purpose of the study was to assess color vision (CV) and contrast sensitivity (CS) in patients with primary angle closure glaucoma (PACG) and primary angle closure (PAC) and to correlate these changes with age-matched controls.
Hennaav Kaur Dhillon, Parul Ichhpujani, Uday Pratap Singh Parmar, Suresh Kumar Gupta   +3 more
doaj   +1 more source

Diagnostic accuracy of three-dimensional contrast-enhanced automatic moving-table MR angiography in patients with peripheral arterial occlusive disease in comparison with digital subtraction angiography

The Egyptian Journal of Radiology and Nuclear Medicine, 2015
Objective: The aim of this study was to compare the diagnostic accuracy of contrast-enhanced (CE) three-dimensional (3D) moving-table magnetic resonance (MR) angiography with that of selective digital subtraction angiography (DSA) for routine clinical ...
Hazem Soliman
doaj   +1 more source

Impact of text contrast polarity on the retinal activity in myopes and emmetropes using modified pattern ERG

Scientific Reports, 2023
Environmental factors favoring myopia development are still being studied and there is accumulating evidence for a significant role of nearwork. Recently, reading standard black-on-white text was found to activate the retinal OFF pathway and induce ...
Sandra Wagner, Torsten Strasser
doaj   +1 more source

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk, Sebastian Michaelis, Michaela Döring, Thomas Eichholz, Ursula Holzer, Martin Ebinger, Tim Flaadt, Rupert Handgretinger, Peter Lang, Jan Frederic Weller, Markus Mezger   +10 more
wiley   +1 more source