Results 41 to 50 of about 8,469,152 (382)

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   +1 more source

A `bright zone' in male hoverfly (Eristalis tenax) eyes and associated faster motion detection and increased contrast sensitivity [PDF]

, 2006
Eyes of the hoverfly Eristalis tenax are sexually dimorphic such that males have a fronto-dorsal region of large facets. In contrast to other large flies in which large facets are associated with a decreased interommatidial angle to form a dorsal `acute ...
O'Carroll, David C., Straw, Andrew D., Warrant, Eric J.   +2 more
core   +2 more sources

Evaluating the performance of the quick CSF method in detecting contrast sensitivity function changes

Journal of Vision, 2016
The contrast sensitivity function (CSF) has shown promise as a functional vision endpoint for monitoring the changes in functional vision that accompany eye disease or its treatment.
Fang Hou, Luis A. Lesmes, Woojae Kim, Hairong Gu, M. Pitt, Jay I. Myung, Zhonglin Lu   +6 more
semanticscholar   +1 more source

The Effect of Ocular Surface Regularity on Contrast Sensitivity and Straylight in Dry Eye.

Investigative Ophthalmology and Visual Science, 2017
Purpose To investigate the association between visual function and ocular surface regularity in dry eye. Methods We enrolled 52 eyes of 52 dry eye patients (34 dry eyes with superficial punctate keratopathy [SPK] in the central corneal region [central ...
S. Koh, N. Maeda, Chikako Ikeda, S. Asonuma, Mai Ogawa, T. Hiraoka, T. Oshika, K. Nishida   +7 more
semanticscholar   +1 more source

Active Learning to Characterize the Full Contrast Sensitivity Function in Cataracts

Clinical Ophthalmology, 2022
Filippos Vingopoulos,1,2 Megan Kasetty,1 Itika Garg,1,2 Rebecca F Silverman,1 Raviv Katz,1,2 Ryan A Vasan,3 Alice C Lorch,3 Zhonghui K Luo,3 John B Miller1,2 1Harvard Retinal Imaging Lab, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA;
Vingopoulos F, Kasetty M, Garg I, Silverman RF, Katz R, Vasan RA, Lorch AC, Luo ZK, Miller JB   +8 more
doaj  

The effect of transcranial direct current stimulation on contrast sensitivity and visual evoked potential amplitude in adults with amblyopia

Scientific Reports, 2016
Amblyopia is a neurodevelopmental disorder of vision that occurs when the visual cortex receives decorrelated inputs from the two eyes during an early critical period of development. Amblyopic eyes are subject to suppression from the fellow eye, generate
Z. Ding, Jinrong Li, Daniel P. Spiegel, Zidong Chen, Lily Y. L. Chan, G. Luo, Junpeng Yuan, D. Deng, Minbin Yu, B. Thompson   +9 more
semanticscholar   +1 more source

Contrast sensitivity abnormalities in deaf individuals

Journal of Ophthalmic & Vision Research, 2018
Purpose: Hearing impaired children are heavily dependent on their sense of vision to develop efficient communication skills; any contrast sensitivity defect can negatively impact their lives because they are not able to use auditory stimuli to recognize ...
Masoud Khorrami-Nejad, Javad Heravian, Farshad Askarizadeh, Davood Sobhani-Rad   +3 more
doaj   +1 more source

Spatial contrast sensitivity in adolescents with autism spectrum disorders [PDF]

, 2010
Adolescents with autism spectrum disorders (ASD) and typically developing (TD) controls underwent a rigorous psychophysical assessment that measured contrast sensitivity to seven spatial frequencies (0.5-20 cycles/degree). A contrast sensitivity function
A Bertone, A Lahaie, AB Watson, APA, B Jemel, BS Abrahams, C Deruelle, C Deruelle, C Jarrold, C Kemner, C Lord, DH Kelly, E Ashwin, E Milne, E Milne, E Milne, E Pellicano, EJ Gumbel, Elizabeth Milne, F Faul, F Happé, F Happé, H Tager-Flusberg, HC Hughes, Hwan Cui Koh, J Gwiazda, J Katsyri, JA Movshon, JC Badcock, JE Scharre, JG Robson, JN Constantino, Karen Dobkins, KL Gunther, KR Dobkins, L Beglinger, L Mottron, M Behrmann, M Behrmann, M Rutter, MA Boeschoten, MA Boeschoten, MA Boeschoten, MJ Brosnan, MM Taylor, MV Jonge de, NL Johnson, O Tadevosyan-Leyfer, R Davis, S Risi, V Virsu, WH Ridder, XQ Liu   +52 more
core   +1 more source

Microstructural parameter estimation in vivo using diffusion MRI and structured prior information. [PDF]

, 2016
Diffusion MRI has recently been used with detailed models to probe tissue microstructure. Much of this work has been performed ex vivo with powerful scanner hardware, to gain sensitivity to parameters such as axon radius.
Aboitiz, Alexander, Alexander, Andersson, Assaf, Assaf, Barazany, Basser, Callaghan, Clayden, Clayden, Drobnjak, Dyrby, Eddelbuettel, Eddelbuettel, Feinberg, Gelderen, Hall, Huang, Ianuş, Koch, Lawrenz, Le Bihan, Li, McNab, Neuman, Nilsson, Nilsson, Price, R Core Team. R, Reese, Roberts, Setsompop, Shemesh, Shemesh, Siow, Siow, Stanisz, Stejskal, Swain, Szafer, Xu, Zhang, Zhang   +43 more
core   +1 more source

Visual Contrast Sensitivity in Early-Stage Parkinson's Disease.

Investigative Ophthalmology and Visual Science, 2016
Purpose Visual impairments are frequent in Parkinson's disease (PD) and impact normal functioning in daily activities. Visual contrast sensitivity is a powerful nonmotor sign for discriminating PD patients from controls.
W. Ming, Dimitrios J. Palidis, M. Spering, M. McKeown   +3 more
semanticscholar   +1 more source