Results 11 to 20 of about 7,877,089 (295)

Effect of astigmatism and spherical equivalent correction on contrast sensitivity [PDF]

International Journal of Ophthalmology
AIM: To investigate the effect of astigmatism and spherical equivalent (SE) correction on contrast sensitivity (CS). METHODS: In this cross-sectional study, 103 visually normal subjects aged 18 to 36y with bilateral regular astigmatism in range of 1.00 ...
Maryam Saffarizadeh, Saeed Rahmani, Alireza Akbarzadeh Baghban, Mohammad Ghassemi-Broumand   +3 more
doaj   +2 more sources

Contrast Sensitivity and Stereoacuity in Successfully Treated Refractive Amblyopia

Investigative Ophthalmology and Visual Science, 2022
Purpose To assess whether monocular contrast sensitivity and stereoacuity impairments remain when visual acuity is fully recovered in children with refractive amblyopia.
Yu Jia, Q. Ye, Shenglan Zhang, Lei Feng, Jing Liu, Zixuan Xu, Yijing Zhuang, Yunsi He, Yusong Zhou, Xiaolan Chen, Ying Yao, Rengang Jiang, B. Thompson, Jinrong Li   +13 more
semanticscholar   +1 more source

Image luminance changes contrast sensitivity in visual cortex

Cell Reports, 2021
SUMMARY Accurate measures of contrast sensitivity are important for evaluating visual disease progression and for navigation safety. Previous measures suggested that cortical contrast sensitivity was constant across widely different luminance ranges ...
Hamed Rahimi-Nasrabadi, Jianzhong Jin, Reece E. Mazade, Carmen Pons, Sohrab Najafian, J. Alonso   +5 more
semanticscholar   +1 more source

Measuring the Contrast Sensitivity Function in Non-Neovascular and Neovascular Age-Related Macular Degeneration: The Quantitative Contrast Sensitivity Function Test

Journal of Clinical Medicine, 2021
Age-related macular degeneration (AMD) affects various aspects of visual function compromising patients’ functional vision and quality of life. Compared to visual acuity, contrast sensitivity correlates better with vision-related quality of life and ...
Filippos Vingopoulos, K. Wai, Raviv Katz, D. Vavvas, L. Kim, John B. Miller   +5 more
semanticscholar   +1 more source

Assessing the contrast sensitivity function in myopic parafovea: A quick contrast sensitivity functions study

Frontiers in Neuroscience, 2022
PurposeCompare peripheral contrast sensitivity functions (CSF) between myopes and emmetropes to reveal potential myogenic risks during emmetropization.Materials and methodsThis observational, cross-sectional, non-consecutive case study included data from
Zixuan Xu, Yijing Zhuang, Zhipeng Chen, Fang Hou, Lily Y. L. Chan, Lei Feng, Qingqing Ye, Yunsi He, Yusong Zhou, Yu Jia, Junpeng Yuan, Zhong-Lin Lu, Zhong-Lin Lu, Zhong-Lin Lu, Jinrong Li   +14 more
doaj   +1 more source

Effect of laser peripheral iridotomy on contrast sensitivity using Spaeth/Richman Contrast Sensitivity test

Therapeutic Advances in Ophthalmology, 2022
Background: Laser peripheral iridotomy (LPI) is the current standard of care for primary angle-closure glaucoma. The existing literature lacks evidence regarding the effects of LPI on contrast sensitivity (CS) after the procedure.
Parul Ichhpujani, Sahil Thakur, Tanu Singh, Rohan Bir Singh, Suresh Kumar   +4 more
doaj   +1 more source

Normative database for Spaeth Richman contrast sensitivity test for Indian eyes

Indian Journal of Ophthalmology, 2022
Purpose: To ascertain normative database of contrast sensitivity (CS) using Spaeth/Richman CS test (SPARCS) in the Indian population. Methods: This cross-sectional study enrolled 200 healthy individuals, and CS was tested in both eyes of each participant
Sonia Bariya, Parul Ichhpujani, Obaidur Rehman, Suresh Kumar   +3 more
doaj   +1 more source

Stimulus-dependent contrast sensitivity asymmetries around the visual field

bioRxiv, 2020
Asymmetries in visual performance at isoeccentric locations are known as performance fields. At a fixed eccentricity, visual performance is best along the horizontal, intermediate along the lower vertical, and poorest along the upper vertical meridian ...
M. Himmelberg, J. Winawer, M. Carrasco
semanticscholar   +1 more source

Spatio-chromatic contrast sensitivity under mesopic and photopic light levels

Journal of Vision, 2020
Contrast sensitivity functions (CSFs) characterize the sensitivity of the human visual system at different spatial scales, but little is known as to how contrast sensitivity for achromatic and chromatic stimuli changes from a mesopic to a highly photopic
S. Wuerger, M. Ashraf, Minjung Kim, J. Martinovic, M. Pérez-Ortiz, Rafał K. Mantiuk   +5 more
semanticscholar   +1 more source

Short-Term Peripheral Contrast Reduction Affects Central Chromatic and Achromatic Contrast Sensitivity

Photonics, 2022
Peripheral retinal contrast reduction is suggested as a potential myopia control strategy. However, the underlying mechanism is yet unknown. Therefore, this study investigated the influence of peripheral contrast reduction on central chromatic and ...
Antonia Neumann, Alexander Leube, Najma Nabawi, Yannick Sauer, Peter Essig, Katharina Breher, Siegfried Wahl   +6 more
doaj   +1 more source