Results 41 to 50 of about 8,367,182 (364)
Active Learning to Characterize the Full Contrast Sensitivity Function in Cataracts
Clinical Ophthalmology, 2022 Filippos Vingopoulos,1,2 Megan Kasetty,1 Itika Garg,1,2 Rebecca F Silverman,1 Raviv Katz,1,2 Ryan A Vasan,3 Alice C Lorch,3 Zhonghui K Luo,3 John B Miller1,2 1Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA;
Vingopoulos F +8 more
doaj
Dyschromatopsia and contrast sensitivity changes in COVID-19 patients
Indian Journal of Ophthalmology, 2023 Purpose: To evaluate the alterations in the psycho-physical tests, contrast sensitivity (CS) and hue discrimination (total estimation score, TES) in COVID-19 patients.
Aditi Sharma +10 more
doaj +1 more source
Scientific Reports, 2016 Amblyopia is a neurodevelopmental disorder of vision that occurs when the visual cortex receives decorrelated inputs from the two eyes during an early critical period of development. Amblyopic eyes are subject to suppression from the fellow eye, generate
Z. Ding +9 more
semanticscholar +1 more source
Influence of contrast media dose and osmolality on the diagnostic performance of contrast fractional flow reserve [PDF]
, 2017 Background—Contrast fractional flow reserve (cFFR) is a method for assessing functional significance of coronary stenoses, which is more accurate than resting indices and does not require adenosine.
Berry, Colin +10 more
core +1 more source
The Evaluation of Yellow vs. Blue Color Contrast Sensitivity pre and Post LASIK [PDF]
Iranian Journal of Medical Physics, 2007 Introduction: contrast sensitivity is one of the most important psychophysical tests that may be used for the evaluation of refractive state of eye and retinal image quality. Yellow vs. blue color contrast sensitivity may be more suitable in this regard.
S. Heydarian +3 more
doaj +1 more source
Mobile app Aston contrast sensitivity test [PDF]
, 2016 BACKGROUND: Contrast detection is an important aspect of the assessment of visual function; however, clinical tests evaluate limited spatial frequencies and contrasts.
Drew, Tom +3 more
core +1 more source
Visual Contrast Sensitivity in Early-Stage Parkinson's Disease.
Investigative Ophthalmology and Visual Science, 2016 Purpose Visual impairments are frequent in Parkinson's disease (PD) and impact normal functioning in daily activities. Visual contrast sensitivity is a powerful nonmotor sign for discriminating PD patients from controls.
W. Ming +3 more
semanticscholar +1 more source
Contrast sensitivity abnormalities in deaf individuals
Journal of Ophthalmic & Vision Research, 2018 Purpose: Hearing impaired children are heavily dependent on their sense of vision to develop efficient communication skills; any contrast sensitivity defect can negatively impact their lives because they are not able to use auditory stimuli to recognize ...
Masoud Khorrami-Nejad +3 more
doaj +1 more source
The contrast sensitivity of retinal ganglion cells of the cat
Journal of Physiology, 1966 1. Spatial summation within cat retinal receptive fields was studied by recording from optic‐tract fibres the responses of ganglion cells to grating patterns whose luminance perpendicular to the bars varied sinusoidally about the mean level.
C. Enroth-Cugell, J. Robson
semanticscholar +1 more source
Is contrast-enhanced US alternative to spiral CT in the assessment of treatment outcome of radiofrequency ablation in hepatocellular carcinoma? [PDF]
, 2009 Purpose: The present study was conducted to assess the efficacy of contrast-enhanced ultrasound with low mechanical index in evaluating the response of percutaneous radiofrequency ablation treatment of hepatocellular carcinoma by comparing it with 4-row ...
BEZZI, Mario +10 more
core +1 more source