Results 1 to 10 of about 16,330 (213)

Octopaminergic modulation of contrast sensitivity [PDF]

open access: yesFrontiers 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   +2 more
doaj   +3 more sources

The new numbers contrast sensitivity chart for contrast sensitivity measurement

open access: yesJournal 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   +2 more
doaj   +2 more sources

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

open access: yesFrontiers 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   +14 more
doaj   +1 more source

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

open access: yesTherapeutic 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   +4 more
doaj   +1 more source

Normative database for Spaeth Richman contrast sensitivity test for Indian eyes

open access: yesIndian 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   +3 more
doaj   +1 more source

Contrast sensitivity functions in autoencoders

open access: yesJournal 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   +3 more
openaire   +6 more sources

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

open access: yesPhotonics, 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   +6 more
doaj   +1 more source

Effects of Different Contact Lens Designs on Visual Quality Among the Soft Spherical Contact Lens Users

open access: yesTürk Oftalmoloji Dergisi, 2013
Purpose: To evaluate the effects of different lens designs on visual quality among soft spherical contact lens users. Material and Method: Forty eyes of twenty patients from our contact lens unit were included in this study.
Mustafa Demir   +2 more
doaj   +1 more source

Measuring contrast sensitivity

open access: yesVision Research, 2013
Contrast sensitivity defines the threshold between the visible and invisible, which has obvious significance for basic and clinical vision science. Fechner's 1860 review reported that threshold contrast is 1% for a remarkably wide range of targets and conditions.
Pelli, Denis G., Bex, Peter
openaire   +2 more sources

Digital contrast sensitivity chart with varying visual acuity: Development and validation

open access: yesOman Journal of Ophthalmology, 2023
BACKGROUND: Contrast sensitivity (CS) evaluation is very much necessary for the diagnosis and management of eye conditions. Several disadvantages seen in the traditionally used Pelli-Robson (PR) chart persuaded us to develop a novel digital device for ...
Prateeksha G Hegde   +3 more
doaj   +1 more source

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