To decide this issue, we measured optotype acuity, Vernier acuity, grating acuity, contrast sensitivity, and binocular function in 427 adults with amblyopia or with risk factors for amblyopia and in a comparison group of 68 normal observers. (nyu.edu)
Optotype acuity accounts for much of the variance in Vernier and grating acuity, and somewhat less of the variance in contrast sensitivity. (nyu.edu)
This analysis revealed two main dimensions of variation in the visual performance of our abnormal sample, one related to the visual acuity measures (optotype, Vernier, and grating acuity) and the other related to the contrast sensitivity measures (Pelli-Robson and edge contrast sensitivity). (nyu.edu)
Non-binocular observers with mild-to-moderate acuity deficits have, on average, better monocular contrast sensitivity than do binocular observers with the same acuity loss. (nyu.edu)
Despite their superior contrast sensitivity, non-binocular observers typically have poorer optotype acuity and Vernier acuity, at a given level of grating acuity, than those with residual binocular function. (nyu.edu)
Manifest refraction, Goldmann binocular visual field tests, contrast sensitivity tests, and biomicroscopic examinations were performed along with evaluations of questionnaire responses and the binocular corrected distance visual acuity (CDVA), distance-corrected near visual acuity (DCNVA), distance-corrected intermediate visual acuity (DCIVA), and depth of focus, both before and after 2 weeks of lens wear. (elsevierpure.com)
Outcome measures were better-eye monocular acuity, binocular acuity, better-eye contrast sensitivity, binocular contrast sensitivity, and pupil diameter under monocular and binocular conditions. (lasiksucks4u.com)
After the primary evaluation, iPad-based stereo acuity and contrast sensitivity tests were conducted using the subject's existing refractive correction. (tionet.in)
In the clinic, binocular contrast sensitivity (CS) and better-eye visual acuity (VA) were evaluated, and 24-2 VFs were obtained to calculate average integrated VF (IVF) sensitivity. (johnshopkins.edu)
The state of visual functions (visual acuity, visual field, colorvision, binocular vision, contrast sensitivity) affects each domain quality of life, which means visual impairment has a significant negative impact on quality of life. (ac.rs)
Visual acuity was assessed binocularly using a computerised test chart at 95%, 50% and 10% contrast. (aston.ac.uk)
When the maximal spatial frequency capable of driving the response ("acuity") was measured under monocular and binocular viewing conditions, the monocular acuity was identical to the binocular acuity measured with the same rotation direction. (elsevierpure.com)
The optokinetic acuities were also consistently lower than acuity estimates from the Visual Water Task, but contrast sensitivities were the same or better. (elsevierpure.com)
Stereoacuity, reading speed, contrast sensitivity and visual acuity were shown to improve in amblyopic adults after playing a novel video game combining action gaming, perceptual learning and dichoptic presentation. (moussaeyedoctor.com)
There was no difference in the binocular uncorrected distant visual acuity (UDVA) before and after surgery, but the UDVA of the operated eye decreased significantly to 0.38 ± 0.15 logMAR at 6 months postoperatively (p = 0.007) and to 0.32 ± 0.21 logMAR at the last observation (p = 0.012). (kyobobook.co.kr)
The main outcome measures were visual acuity, binocular indirect ophthalmoscopy score, adverse effects, and quality of life. (bvsalud.org)
Vision25
Binocular summation refers to the improved visual performance of binocular vision compared to that of monocular vision. (wikipedia.org)
The most vital benefit of binocular vision is stereopsis or depth perception, however binocular summation does afford some subtle advantages as well. (wikipedia.org)
Though binocular summation generally enhances binocular vision, it can worsen binocular vision relative to monocular vision under certain conditions. (wikipedia.org)
However, when auditory and tactile stimuli that were too weak on their own to bias binocular rivalry were combined, their influence over vision was very strong, suggesting the auditory and tactile temporal signals combined to influence vision. (jneurosci.org)
Four hour exposure to a TEA concentration of 3.0 mg/m3 seemed to cause no effects, whereas exposure to 6.5 mg/m3 for the same period caused blurred vision and a decrease in contrast sensitivity. (bmj.com)
She has worked on many aspects of vision, and is responsible for a remarkably varied array of important scientific contributions in the fields of motion perception, binocular vision, color perception, amblyopia, and visual search. (ski.org)
Suzanne has made many fundamental contributions to understanding the stereo matching problem as well as insight into the role of binocular vision in amblyopia. (ski.org)
Our primary interests include normal and abnormal binocular vision, motion processing and contrast sensitivity. (ski.org)
[ 1 ] although permanent residual deficits in color vision and contrast and brightness sensitivity are common. (medscape.com)
The size of the sine-wave gratings, the contrast levels, and their tilt are all based on current vision science and empirical data. (academy.org.uk)
Likewise, the patients receiving this implant experienced excellent intermediate vision and binocular mesopic contrast sensitivity, which is comparable to the other lenses. (ophthalmologytimes.com)
Impaired binocular vision may be associated with the deterioration of VR-QOL in patients with ERM in the postoperative period. (researchsquare.com)
The assessment of depth perception and binocular vision function can be critical in detecting issues with the alignment of the eyes. (micromedinc.com)
The logarithm of contrast sensitivity has been described as a linear function of retinal eccentricity for a visual field of 120 deg (Pointer and Hess, 1989 Vision Research 29 1133-1151). (aston.ac.uk)
Purpose: To compare binocular and monocular vision in patients treated with laser in situ keratomileusis (LASIK) and in non-LASIK patients. (lasiksucks4u.com)
Conclusions: Monocular testing induced larger pupil diameters, which was associated with reduced vision compared to binocular measurements in LASIK and non-LASIK patients. (lasiksucks4u.com)
This function is called binocular vision. (koalaeye.com)
The binocular vision function can be divided into three levels, simultaneous vision, binocular fusion, and stereoscopic vision. (koalaeye.com)
By checking the movement function of the eyeball (collection ability), the adjustment ability of the eyes, and whether the collection and adjustment match, it can be judged whether the binocular vision function is normal. (koalaeye.com)
They may present with a multitude of complaints such as poor vision, difficulty driving, reading, recognizing faces and glare sensitivity. (reviewofoptometry.com)
CDVA3
Major parameters were monocular and binocular uncorrected (UDVA) and corrected (CDVA) distance, uncorrected (UIVA) and distance corrected (DCIVA) intermediate (80 cm), and uncorrected (UNVA) and distance corrected (DCNVA) near (40 cm) visual acuities (UNVA), contrast sensitivity (CS), defocus curve as well as patient satisfaction and spectacle use. (scirp.org)
0.001, and 0.046, respectively), with no changes in the binocular visual field and binocular CDVA. (elsevierpure.com)
Results - The mean monocular CDVA was 0.08 logMAR ± 0.08 (SD) and the mean binocular CDVA, 0.06 ± 0.08 logMAR. (aston.ac.uk)
Contrast sensitivity function was assessed under photopic conditions. (aston.ac.uk)
Halometry was used to measure the angular size of monocular and binocular photopic scotomas arising from a glare source. (aston.ac.uk)
Photopic contrast sensitivity was significantly better binocularly than monocularly at all spatial frequencies. (aston.ac.uk)
Abnormal1
In general, amblyopia is believed to result from disuse from inadequate foveal or peripheral retinal stimulation and/or abnormal binocular interaction that causes different visual input from the foveae. (medscape.com)
LogMAR3
The primary endpoint was the mean Key Points change from baseline to month 6 in VA measured in log- arithm of the minimum angle of resolution (logMAR) at Assessment of optic nerve function is a readily 100% contrast of the selected eye. (deepdyve.com)
MD1003-treated patients also had nonsignicant These results are consistent with recent data that improvement in logMAR at 5% contrast and in RNFL showed that MD1003 can decrease progression and thickness and health outcome scores when compared with improving walking disability in patients with placebo-treated patients. (deepdyve.com)
The binocular UNVA improved significantly to 0.19 ± 0.78 logMAR at 6 months postoperatively (p = 0.017) and to 0.21 ± 0.13 logMAR at the last observation (p = 0.028). (kyobobook.co.kr)
Amblyopia6
New research is lending support to the belief that supervised, contrast-balanced binocular treatments may be an option for children with deprivation amblyopia, often developed due to childhood cataracts. (reviewofoptometry.com)
Investigators launched this research with the idea that these patients could benefit from a strategy currently being explored for those with anisometropic and strabismic amblyopia-contrast-balanced binocular therapy. (reviewofoptometry.com)
However, the deprivation amblyopia group had a smaller, but still statistically significant, improvement in their weaker eyes' visual acuities, as well a significant improvement in weaker eye contrast sensitivities. (reviewofoptometry.com)
Portable video game treatments on the iPod, convenient for home use, improved binocular perception in adults and thus represents a viable option for treatment of adult amblyopia. (moussaeyedoctor.com)
Indirect ophthalmoscopy gives an inverted, binocular and magnified real image. (semiologiaclinica.com)
Subjective refraction was also conducted, including a duo chrome test and binocular balancing, followed by direct ophthalmoscopy for fundus evaluation. (tionet.in)
Spatial4
Each row or circular grouping of patches tests at a specific spatial frequency (cycles per degree), which measures the observer's sensitivity to a particular object size. (academy.org.uk)
We measured contrast detection thresholds for oriented cosine-phase log-Gabor stimuli with a spatial frequency of 4 cycles deg 1 and bandwidths of 1.6 octaves and 25. (aston.ac.uk)
Contrast sensitivity functions show the responses depend on luminance, contrast, spatial and temporal frequency. (apidologie.org)
The responses of horizontal DNs to contraction and expansion and to unidirectional motion were compared revealing differences in the way they integrate the monocular components of binocular flow-fields and how velocity and spatial structure effects this integration. (apidologie.org)
Decreases3
Binocular summation decreases with age and when large interocular differences are present. (wikipedia.org)
There were no symptoms or decreases in contrast sensitivity after exposure to a TEA concentration of 3.0 mg/m3. (bmj.com)
The contrast decreases from one triplet to the next. (academy.org.uk)
Esterman2
Visual fields, measured by binocular Esterman and monocular Humphrey full-field analyses, improved in case 1. (frontiersin.org)
All 3 devices come equipped with more than 20, threshold, static and kinetic visual field protocols plus neuro testing, ptosis testing, and the Esterman binocular test. (micromedinc.com)
Perception4
Some of the ways in which binocular summation improves binocular visual performance are Brightness perception. (wikipedia.org)
Binocular fusion is based on the normal simultaneous perception of both eyes. (koalaeye.com)
Sensory sensitivity was assessed with the Sensory Perception Quotient and group comparisons were carried out. (biomedcentral.com)
One of the questionnaires used to assess sensory sensitivity is the Sensory Perception Quotient (SPQ), which evaluates a variety of visual parameters and has been used in both healthy and clinical populations [ 16 ]. (biomedcentral.com)
Brightness3
Binocular summation also increases the perceived brightness of the flicker when both inputs are in phase. (wikipedia.org)
B S R = C S b i n o c u l a r / C S b e t t e r e y e {\displaystyle BSR=CS_{binocular}/CS_{better\ eye}} One might expect the inputs from each eye to simply add together, and that the perceived brightness with two eyes is twice that of a single eye. (wikipedia.org)
Schrödinger (1926) put forth an equation for binocular brightness and contrast combination where each monocular input is weighted by the ratio of the signal strength from that eye to the sum of the signal from both eyes. (wikipedia.org)
Here we investigate whether auditory and tactile stimuli can influence binocular rivalry generated by interocular temporal conflict in human subjects. (jneurosci.org)
Auditory and tactile stimulation both interacted with binocular rivalry by promoting dominance of the congruent visual stimulus. (jneurosci.org)
Congruent tactile stimulation reduces the strength of visual suppression during binocular rivalry,Sci. (pisavisionlab.org)
Presenting different images to each eye triggers 'binocular rivalry' in which one image is visible and the other suppressed, with the visible image alternating every second or so. (pisavisionlab.org)
We previously showed that binocular rivalry between cross-oriented gratings is altered when the fingertip explores a grooved stimulus aligned with one of the rivaling gratings: the matching visual grating's dominance duration was lengthened and its suppression duration shortened. (pisavisionlab.org)
In a more robust test, we here measure visual contrast sensitivity during rivalry dominance and suppression, with and without exploration of the grooved surface, to determine if rivalry suppression strength is modulated by touch. (pisavisionlab.org)
These results show that congruent haptic stimulation prevents a visual stimulus from becoming deeply suppressed in binocular rivalry. (pisavisionlab.org)
https://www.pisavisionlab.org/wp-content/uploads/2019/10/1234978_308081282665044_285697448_n-300x300.jpg 0 0 daniele https://www.pisavisionlab.org/wp-content/uploads/2019/10/1234978_308081282665044_285697448_n-300x300.jpg daniele 2019-12-23 06:55:56 2019-12-23 06:55:56 Congruent tactile stimulation reduces the strength of visual suppression during binocular rivalry,Sci. (pisavisionlab.org)
Importantly, across participants, the decrease in GABA strongly correlated with the deprived eye perceptual boost measured by binocular rivalry. (pisavisionlab.org)
Specifically, after 150 min of monocular deprivation the deprived eye strongly dominates the dynamics of binocular rivalry, reflecting homeostatic plasticity. (pisavisionlab.org)
Diplopia3
Diplopia may be monocular or binocular. (msdmanuals.com)
Binocular diplopia disappears when either eye is closed. (msdmanuals.com)
Binocular diplopia suggests disconjugate alignment of the eyes. (msdmanuals.com)
The spectral response of S-cones peak at 420 nm, M-cones at 534 nm, and L-cones at 564 nm, with significant overlap in their spectral response ranges and varying degrees of sensitivity at these range of wavelengths specified by the function m k (λ), k = r, g, b, as depicted in Figure 2.1(a) . (informit.com)
where m k (λ) is the wavelength sensitivity function (also known as the color matching function) of the k th cone type or color sensor. (informit.com)
Flicker1
Binocular summation can increase the critical flicker fusion rate (CFF) which is the highest perceivable flicker rate before the image appears continuous. (wikipedia.org)
Assessment2
The G2 and NEO can be equipped with an automated assessment of a patient's visual sensitivity to contrast. (micromedinc.com)
Mean age among those completing the home assessment (n = 174) was 71.1 years, and IVF sensitivity ranged from 5.6 to 33.4 dB (mean = 27.2 dB, standard deviation [SD] = 4.0 dB). (johnshopkins.edu)
Binocularity1
A practical measure of binocularity is the binocular summation ratio BSR, which is the ratio of binocular contrast sensitivity to the contrast sensitivity of the better eye. (wikipedia.org)
Patterns1
Recently, Alais and Parker (2012) showed that spatially matched random patterns rival vigorously when contrast-modulated at very different rates (e.g., factor of 4). (jneurosci.org)
Thresholds1
Determine the CS thresholds in terms of a contrast percentage under the following conditions. (academy.org.uk)
3. With haze glasses (binocular) and a glare source as discussed above. (academy.org.uk)
Gratings1
The VCTS uses highly controlled advanced photographic and printing techniques to present a series of sine-wave gratings at carefully calibrated levels of contrast. (academy.org.uk)
Luminance1
Effects of chromatic and luminance contrast on reading. (w3.org)
Optic1
A. 1.5 Tesla, contrast-enhanced spin echo T1-weighted, fat-suppressed coronal MRI through the orbits shows enlargement and contrast enhancement of the left optic nerve in the retrobulbar portion (arrow). (medscape.com)
Frequencies1
The low frequencies test sensitivity to very large objects, while on the other end, high frequencies measure sensitivity to very small objects. (academy.org.uk)
Conditions1
Thus, the visual capabilities of each eye can be measured under binocular conditions simply by changing the direction of rotation. (elsevierpure.com)