Results 61 to 70 of about 1,638,360 (322)

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

open access: yesOman 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   +3 more
doaj   +1 more source

Evaluation of visual functions in Iranian hypothyroid adults

open access: yesEndocrinology, Diabetes & Metabolism, 2023
Introduction The aim of this study was to investigate the effects of hypothyroidism on visual functions such as visual acuity, refractive errors, colour vision, and contrast sensitivity, among hypothyroid adults.
Somayyeh Boomi Quchan Atigh   +5 more
doaj   +1 more source

Visual and cognitive functioning among older adults with low vision before vision rehabilitation: A pilot study

open access: yesFrontiers in Psychology, 2023
IntroductionThe occurrence of age-related vision changes is inevitable. However, some of these changes can become pathological. Research indicates that vision and hearing loss is correlated with age-related cognitive decline, and with a higher risk of ...
Gabrielle Aubin   +9 more
doaj   +1 more source

Predicting individual contrast sensitivity functions from acuity and letter contrast sensitivity measurements. [PDF]

open access: yes, 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 ...
Davey, Pinakin Gunvant   +4 more
core   +1 more source

Spatiotemporal contrast sensitivity of early vision

open access: yesVision Research, 1993
Based on the spatial and temporal statistics of natural images, a theory is developed that specifies spatiotemporal filters that maximize the flow of information through noisy channels of limited dynamic range. Sensitivities resulting from these spatiotemporal filters are very similar to the human spatiotemporal contrast sensitivity, including the ...
openaire   +3 more sources

Sex Representation in US Stroke Clinical Trials: A Decade of Trends and Challenges

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Stroke remains a major cause of disability and mortality in the US, with significant sex‐based disparities, and females remain underrepresented in stroke clinical trials. We aimed to examine sex representation in US‐based stroke clinical trials, identify trial characteristics associated with higher female enrollment (≥ 50%), and ...
Chaitali Dagli   +5 more
wiley   +1 more source

Economic Man and Literary Woman: One Contrast [PDF]

open access: yes, 1988
The law and literature movement has been with us long enough that it is now possible to speak seriously of a literary analysis of law, just as it has become possible, and even standard, to speak of an economic analysis of law. It is also standard, of
West, Robin
core   +1 more source

Electrical stimulation of visual cortex can immediately improve spatial vision [PDF]

open access: yes, 2016
Published in final edited form as:Curr Biol. 2016 July 25; 26(14): 1867–1872. doi:10.1016/j.cub.2016.05.019.SUMMARY We can improve human vision by correcting the optics of our lenses [1, 2, 3].
McClenahan, Laura J.   +3 more
core   +1 more source

Ultrasonography Compared With Computed Tomography in Identifying Thoracic Aortic Aneurysms in Patients With Giant Cell Arteritis

open access: yesArthritis Care &Research, EarlyView.
Objective The objectives of this study were to evaluate the correlation and agreement between ultrasonography and computed tomography (CT) in measuring ascending aorta diameter in patients with giant cell arteritis (GCA) and to investigate the development of new ascending aortic aneurysms in patients with newly diagnosed GCA.
Anne C. Bull Haaversen   +4 more
wiley   +1 more source

LOW VISION X-RAY IMAGES CONTRAST ENHANCEMENT USING WAVELET TRANSFORM AND NON-LINEAR MAPPING

open access: yesDiyala Journal of Engineering Sciences, 2009
This paper proposes a new method for enhancing the contrast of medical images based on Wavelet Transform. Wavelet transforms offer an efficient representation of the signal, finely tuned to its intrinsic properties involves simple processing techniques ...
Raghad Zuhair Yousif Al-Macdici
doaj   +1 more source

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