Results 11 to 20 of about 2,255,413 (373)
Development and Validation of a Smartphone-Based Visual Acuity Test (Peek Acuity) for Clinical Practice and Community-Based Fieldwork. [PDF]
JAMA ophthalmology, 2015 IMPORTANCE: Visual acuity is the most frequently performed measure of visual function in clinical practice and most people worldwide living with visual impairment are living in low- and middle-income countries.
Bastawrous, Andrew +6 more
core +2 more sources
Investigative Opthalmology & Visual Science, 2018 Dry eye (DE) causes irregularity of the ocular surface and reduces the quality of vision. An intact, regular tear film is essential for high-quality retinal images; however, visual tasks requiring sustained gazing can disrupt the tear film, eventually degrading visual function.
M. Kaido
openaire +4 more sources
THE RELATION BETWEEN VISUAL ACUITY AND ILLUMINATION [PDF]
The Journal of General Physiology, 1928 1. Visual acuity varies in a definite manner with the illumination. At low intensities visual acuity increases slowly in proportion to log I; at higher intensities it increases nearly ten times more rapidly in relation to log I; at the highest ...
Selig Hecht
openalex +2 more sources
THE VISUAL ACUITY OF THE HONEY BEE [PDF]
The Journal of General Physiology, 1929 1. Bees respond by a characteristic reflex to a movement in their visual field. By confining the field to a series of parallel dark and luminous bars it is possible to determine the size of bar to which the bees respond under different conditions and in ...
Selig Hecht, Ernst Wolf
openalex +2 more sources
Prevalence of Visual Acuity Loss or Blindness in the US
JAMA ophthalmology, 2021 Key Points Question How many people in the US are living with uncorrectable visual acuity loss or blindness? Findings This bayesian meta-analysis generated an estimate that, in 2017, there were 7.08 million people living with visual acuity loss, of whom ...
A. Flaxman +7 more
semanticscholar +1 more source
Visual acuity and the resolving power of the eye
Journal of Physiology, 1922 H. Hartridge
openalex +3 more sources
Vertical dynamic visual acuity is significantly lower than horizontal dynamic visual acuity
Scientific Reports, 2023 Dynamic visual acuity (DVA) is crucial for the perception of moving objects. While traditional DVA assessment tools predominantly focus on horizontal movements, the evaluation of vertical DVA remains unstandardized.
Aoi Tachihara +5 more
doaj +1 more source
Finely tuned eye movements enhance visual acuity
Nature Communications, 2020 High visual acuity is essential for many tasks, from recognizing distant friends to driving a car. While much is known about how the eye’s optics and anatomy contribute to spatial resolution, possible influences from eye movements are rarely considered ...
J. Intoy, M. Rucci
semanticscholar +1 more source
Indian Journal of Ophthalmology, 2021 Purpose: The aim of this study was to determine habitual visual acuity (HVA) in a large urban cohort in western India and identify factors associated with poor HVA.
Nishant Kumar +3 more
doaj +1 more source
Asymmetries in visual acuity around the visual field
Journal of Vision, 2020 Human vision is heterogeneous around the visual field. At a fixed eccentricity, performance is better along the horizontal than the vertical meridian and along the lower than the upper vertical meridian.
A. Barbot, Shutian Xue, M. Carrasco
semanticscholar +1 more source