Results 31 to 40 of about 7,979,651 (342)
The Effect of Ocular Surface Regularity on Contrast Sensitivity and Straylight in Dry Eye.
Investigative Ophthalmology and Visual Science, 2017 Purpose To investigate the association between visual function and ocular surface regularity in dry eye. Methods We enrolled 52 eyes of 52 dry eye patients (34 dry eyes with superficial punctate keratopathy [SPK] in the central corneal region [central ...
S. Koh +7 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
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
Noise provides new insights on contrast sensitivity function. [PDF]
PLoS ONE, 2014 Sensitivity to luminance difference, or contrast sensitivity, is critical for animals to survive in and interact with the external world. The contrast sensitivity function (CSF), which measures visual sensitivity to spatial patterns over a wide range of ...
Ge Chen +7 more
doaj +1 more source
Journal of Vision, 2016 The contrast sensitivity function (CSF) has shown promise as a functional vision endpoint for monitoring the changes in functional vision that accompany eye disease or its treatment.
Fang Hou +6 more
semanticscholar +1 more source
Evaluating the Use of Contrast Sensitivity Tests By Orthoptists in the UK
British and Irish Orthoptic JournalIntroduction: The importance of the use of contrast sensitivity (CS) tests in orthoptic practice is well established. However, despite the clinical relevance the implementation within clinical care is known to be variable. There are no known studies that
Lowri Jones +2 more
doaj +1 more source
Journal of Vision, 2016 Contrast sensitivity (CS) is widely used as a measure of visual function in both basic research and clinical evaluation. There is conflicting evidence on the extent to which measuring the full contrast sensitivity function (CSF) offers more functionally ...
Steven M. Thurman +4 more
semanticscholar +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 Enhancement Using Sensitivity Model-Based Sigmoid Function
IEEE Access, 2019 For indirect contrast enhancement, researchers have proposed various transformation functions based on histogram equalization and gamma correction.
Seung Park, Yong-Goo Shin, Sung-Jea Ko
doaj +1 more source