Results 1 to 10 of about 1,694,215 (160)

Comparison of Spaeth/Richman Contrast Sensitivity and Pelli-Robson Tests for Assessing Contrast Sensitivity in Patients with Glaucoma [PDF]

Journal of Ophthalmic & Vision Research
Purpose: To determine the optimal cut-offs for Pelli-Robson (PR) and Spaeth/Richman contrast sensitivity (SPARCS) test scores for diagnosing glaucoma and to compare PR and SPARCS scores (total and individual quadrants) for assessing contrast sensitivity
Fatema Noble, Suhas Haldipurkar, Vijay Shetty, Tanvi Haldipurkar, Rita Dhamankar, Devendra Venkatramani, Shreyas Dhamorikar, Sarita Deshpande, Maninder Singh Setia   +8 more
doaj   +2 more sources

Assessment of central and peripheral contrast sensitivity in myopes using Spaeth/Richman contrast sensitivity [PDF]

Oman Journal of Ophthalmology
BACKGROUND: Assessing central and peripheral contrast sensitivity (CS) in myopic patients with varying degrees of refractive error using Spaeth/Richman contrast sensitivity test (SPARCS) and compared it with emmetropic individuals. MATERIALS AND METHODS:
Parul Ichhpujani, Uday Pratap Singh Parmar, Rohan Bir Singh, Suresh Kumar   +3 more
doaj   +2 more sources

Octopaminergic modulation of contrast sensitivity [PDF]

Frontiers in Integrative Neuroscience, 2012
Sensory systems adapt to prolonged stimulation by decreasing their response to prevailing stimulus conditions. Whereas visual motion adaptation has traditionally been studied in immobilized animals, recent work indicates that the animal’s behavioral ...
Roel ede Haan, Yu-Jen eLee, Karin eNordström   +2 more
doaj   +3 more sources

Letter contrast sensitivity validation. [PDF]

Ophthalmic Physiol Opt
Abstract Purpose Contrast sensitivity (CS) is an important tool for evaluating functional vision. The Ocular Technology Group—International Vision Suite computerised letter CS test can evaluate multiple spatial frequencies, assessing the entire CS function.
Guillon M, Pepe P, Hull J, Suryakumar R.
europepmc   +3 more sources

The new numbers contrast sensitivity chart for contrast sensitivity measurement

Journal 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, Wasee Tulvatana, Mathu Busayarat   +2 more
doaj   +2 more sources

Effects of COVID-19 on the contrast sensitivity [PDF]

Brazilian Journal of Medical and Biological Research
There are significant gaps in understanding the extent of the damage caused by COVID-19, with few publications examining its link to contrast sensitivity function (CSF).
G.M. Silva, J.J.S Souto, T. Fernandes, G.S. Souza, M.J.O. de Andrade, N.A. dos Santos   +5 more
doaj   +2 more sources

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

Contrast sensitivity functions in autoencoders

Journal of Vision, 2022
Three decades ago, Atick et al. suggested that human frequency sensitivity may emerge from the enhancement required for a more efficient analysis of retinal images. Here we reassess the relevance of low-level vision tasks in the explanation of the Contrast Sensitivity Functions (CSFs) in light of (1) the current trend of using artificial neural ...
Li, Qiang, Gomez-Villa, Alex, Bertalmío, Marcelo, Malo, Jesús   +3 more
openaire   +6 more sources