Results 11 to 20 of about 3,408,895 (339)

Contrast sensitivity of insect motion detectors to natural images [PDF]

, 2008
How do animals regulate self-movement despite large variation in the luminance contrast of the environment? Insects are capable of regulating flight speed based on the velocity of image motion, but the mechanisms for this are unclear.
O'Carroll, David C., Rainsford, Tamath, Straw, Andrew D.   +2 more
core   +2 more sources

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

Psychophysical aspects of contrast sensitivity

African Vision and Eye Health, 2013
This paper reviews the psychophysical aspects of contrast sensitivity which concerns components of visual stimuli and the behavioural responses and methods used in contrast sensitivity testing.
Anusha Y. Sukha, Alan Rubin
doaj   +3 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

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

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

The importance of contrast sensitivity testing in children [PDF]

British and Irish Orthoptic Journal, 2014
Aim:  To discuss the information contrast sensitivity (CS) testing can provide over visual acuity testing, and review the literature relating to CS deficits in children to determine whether there is an optimum test available.
Ashli F. Milling, Anna R. O’connor, David Newsham   +2 more
doaj   +2 more sources

Development of Dynamic Contrast Sensitivity Chart [PDF]

British and Irish Orthoptic Journal
Background: Dynamic visual acuity (DVA) is a complex visual function that requires the observer to detect a moving target, to visually acquire it by eye movements, and to resolve critical details contained in it, in a relatively brief time exposure ...
Nikhita Jacob, Vandana Kamath, B. N. Sanjay   +2 more
doaj   +2 more sources

Predicting contrast sensitivity functions with digital twins [PDF]

Scientific Reports
We developed and validated digital twins (DTs) for contrast sensitivity function (CSF) across 12 prediction tasks using a data-driven, generative model approach based on a hierarchical Bayesian model (HBM).
Yukai Zhao, Luis Andres Lesmes, Michael Dorr, Zhong-Lin Lu   +3 more
doaj   +2 more sources

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

Neural contrast sensitivity is not affected by myopic blur. [PDF]

Sci Rep
Domdei N, Müller J, Renner L, Ameln J, Breher K, Harmening W, Wahl S.   +6 more
europepmc   +3 more sources