Results 31 to 40 of about 1,210,014 (249)

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

A Biomimetic Model of Adaptive Contrast Vision Enhancement from Mantis Shrimp

open access: yesSensors, 2020
Mantis shrimp have complex visual sensors, and thus, they have both color vision and polarization vision, and are adept at using polarization information for visual tasks, such as finding prey. In addition, mantis shrimp, almost unique among animals, can
Binbin Zhong   +4 more
doaj   +1 more source

Sex-related differences in chromatic sensitivity [PDF]

open access: yes, 2008
Generally women are believed to be more discriminating than men in the use of colour names and this is often taken to imply superior colour vision. However, if both X-chromosome linked colour deficient males (~8%) and females (
J.A. HARLOW   +7 more
core   +1 more source

Spatiotemporal contrast sensitivity of early vision [PDF]

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

Dampening Spontaneous Activity Improves the Light Sensitivity and Spatial Acuity of Optogenetic Retinal Prosthetic Responses [PDF]

open access: yes, 2016
Retinitis pigmentosa is a progressive retinal dystrophy that causes irreversible visual impairment and blindness. Retinal prostheses currently represent the only clinically available vision-restoring treatment, but the quality of vision returned remains ...
Barrett, John Martin   +2 more
core   +1 more source

The new numbers contrast sensitivity chart for contrast sensitivity measurement

open access: yesJournal of Optometry, 2011
Purpose: To develop and assess the agreement between the 3 newly made numbers contrast sensitivity charts and the MARS contrast sensitivity chart (MARS) in contrast sensitivity measurement.
Bharkbhum Khambhiphant   +2 more
doaj   +1 more source

Visual Function is Gradually Restored During Retina Regeneration in Adult Zebrafish

open access: yesFrontiers in Cell and Developmental Biology, 2022
In comparison to mammals, zebrafish are able to regenerate many organs and tissues, including the central nervous system (CNS). Within the CNS-derived neural retina, light lesions result in a loss of photoreceptors and the subsequent activation of Müller
Juliane Hammer   +8 more
doaj   +1 more source

Current trends in single‐cell RNA sequencing applications in diabetes mellitus

open access: yesFEBS Open Bio, EarlyView.
Single‐cell RNA sequencing is a powerful approach to decipher the cellular and molecular landscape at a single‐cell resolution. The rapid development of this technology has led to a wide range of applications, including the detection of cellular and molecular mechanisms and the identification and introduction of novel potential diagnostic and ...
Seyed Sajjad Zadian   +6 more
wiley   +1 more source

Next-generation vision testing: the quick CSF

open access: yesCurrent Directions in Biomedical Engineering, 2015
The Contrast Sensitivity Function relates the spatial frequency and contrast of a spatial pattern to its visibility and thus provides a fundamental description of visual function.
Dorr Michael   +6 more
doaj   +1 more source

Visual acuity and contrast sensitivity are two important factors affecting vision-related quality of life in advanced age-related macular degeneration. [PDF]

open access: yesPLoS ONE, 2018
Vision loss from age-related macular degeneration (AMD) has a profound effect on vision-related quality of life (VRQoL). The pupose of this study is to identify clinical factors associated with VRQoL using the Rasch- calibrated NEI VFQ-25 scales in ...
Miin Roh   +4 more
doaj   +1 more source

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