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Contrast Sensitivity Function

Efficacy of perceptual vision therapy in enhancing visual acuity and contrast sensitivity function in adult hypermetropic anisometropic amblyopia

Efficacy of perceptual vision therapy in enhancing visual acuity and contrast sensitivity function in adult hypermetropic anisometropic amblyopia

... Results: The results for the study group demonstrated a mean improvement of 2.6 loga- rithm of the minimum angle of resolution (logMAR) lines in visual acuity (from 0.42 to 0.16 logMAR). Contrast ...

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Retinal-image quality and contrast sensitivity function in eyes with epiretinal membrane: a cross-sectional observational clinical study

Retinal-image quality and contrast sensitivity function in eyes with epiretinal membrane: a cross-sectional observational clinical study

... transfer function cut off requency (MTF cutoff ), and it has been used extensively for visual asthenopia [8], eyes implanted with diffractive multifocal or mono- focal intraocular lenses [9], endothelial ...

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Contrast Sensitivity Studies and Test- Review

Contrast Sensitivity Studies and Test- Review

... spatial contrast sensitivity function (CSF) ...a function of pulse light (flashing) is given ...optical contrast sensitivity as a function of spatial frequency was Schade ...

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A New Quality Metric based on FFT Transform

A New Quality Metric based on FFT Transform

... In this paper we present a quality metric based on the contrast sensitivity function CSF. Our idea is that we cannot give a quality factor at all distances of observation, but what is visible from a ...

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Fuzzy Logic based watermarking using non – blind HVS technique

Fuzzy Logic based watermarking using non – blind HVS technique

... the overlapping effect between luminous adaption and spatial contrast masking. But the drawback of the scheme is it does not consider contrast sensitivity function.A brief introduction of fuzzy logic ...

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Analysis of visual function and quality of life in patients with uveitis

Analysis of visual function and quality of life in patients with uveitis

... The contrast sensitivity function, in recent years, has become popular as a possible diagnostic indicator of visual ...that contrast sensitivity (modulation transfer functions) may ...

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Visual resolution and contrast sensitivity in two benthic sharks

Visual resolution and contrast sensitivity in two benthic sharks

... image contrast and blurring with viewing distance (Lythgoe, 1980, 1988; McFarland, 1990; Land and Nilsson, ...the contrast sensitivity function at spatial frequencies above ...

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Contrast sensitivity deficits in patients with mutation-proven inherited retinal degenerations

Contrast sensitivity deficits in patients with mutation-proven inherited retinal degenerations

... 128 contrast levels ...two-dimensional contrast and spatial frequency combinations using a Bayesian Adaptive Algorithm to update the probabilities of the CS curve ...Log Contrast Sensitivity ...

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Evaluation of contrast sensitivity and other visual function outcomes in neovascular age-related macular degeneration patients after treatment switch to aflibercept from ranibizumab

Evaluation of contrast sensitivity and other visual function outcomes in neovascular age-related macular degeneration patients after treatment switch to aflibercept from ranibizumab

... functioning following anti-VEGF treatment switch, this study was conducted to determine and evaluate change from base- line to week 12 in Pelli–Robson CS as the primary clinical end point in patients with recalcitrant ...

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Mesopic Visual Contrast Sensitivity in Patients with Major Depression

Mesopic Visual Contrast Sensitivity in Patients with Major Depression

... photopic contrast appear to be the dominant factor for the functional activity of the magnocel- lular and parvocellular pathways, respectively, rather than the spatial frequency itself (Skottun & Skoyles, ...

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Visual function assessment in medical imaging research

Visual function assessment in medical imaging research

... eye function to participate in medical imaging observer ...visual function assessment of observers prior to medical imaging perceptual research ...visual function should be assured prior to ...

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Quality of Financial Reporting, Investment and Quality of Disclosure: With Stressing on Type of Financing

Quality of Financial Reporting, Investment and Quality of Disclosure: With Stressing on Type of Financing

... For this reason, quality of financial reporting, the contrast between quality of financial reporting and sensitivity of investment, financial disclosure and sensitivity of[r] ...

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Motion processing deficits in migraine are related to contrast sensitivity

Motion processing deficits in migraine are related to contrast sensitivity

... For motion discrimination trials, a percentage of the dots moved in a coherent direction (up or down) for 300 ms while the remainder moved in random directions. On consecutive trials, the percentage of dots moving ...

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Enhanced motion after effects in migraine are related to contrast sensitivity: implications for models of differences in precortical/cortical function

Enhanced motion after effects in migraine are related to contrast sensitivity: implications for models of differences in precortical/cortical function

... Contrast Sensitivity. The Cambridge Low Contrast Gratings (CLCG) measure contrast sensitivity at a spatial frequency of 4 cycles per degree, close to the maximum sensitivity of ...

8

Critical duration, contrast sensitivity, and specific reading disability

Critical duration, contrast sensitivity, and specific reading disability

... In view of the evidence on spatial frequency-specific temporal properties in visual processing, the possibility of abnormal interaction, in SRD children, of spatial frequency channels, b[r] ...

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Eccentricity-dependent temporal contrast tuning in human visual cortex measured with fMRI.

Eccentricity-dependent temporal contrast tuning in human visual cortex measured with fMRI.

... higher contrast sensitivity and respond at higher flicker frequencies than those closer to the ...temporal contrast sensitivity in the peripheral visual field, this effect is rarely observed ...

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The spectral, spatial and contrast sensitivity of human polarization pattern perception

The spectral, spatial and contrast sensitivity of human polarization pattern perception

... determining sensitivity to grating patterns, the mask had an 8° square aperture and testing was performed both with and without the front polarizer in situ for luminance and polarization measures ...Binocular ...

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Miniaturisation reduces contrast sensitivity and spatial resolving power in ants

Miniaturisation reduces contrast sensitivity and spatial resolving power in ants

... and Wake, 1993). As many insects are polymorphic, they provide an opportunity to characterise the ecologically relevant benefits and costs associated with miniaturisation (e.g. Peeters and Ito, 2015). The benefits of ...

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The improvement of contrast sensitivity with practice is not compatible with a sensory threshold account

The improvement of contrast sensitivity with practice is not compatible with a sensory threshold account

... Without non-linear transduction, the only property that can account for the steep psychometric functions in noise is intrinsic uncertainty, which must be in the range of M ≈1,000 to best fit (i.e., with minimum squared ...

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Associations of subjective and objective clinical outcomes of visual functions with quality of life in Chinese glaucoma patients: a cross-sectional study

Associations of subjective and objective clinical outcomes of visual functions with quality of life in Chinese glaucoma patients: a cross-sectional study

... visual function loss. Subjective visual function loss was assessed using tests of visual acuity (VA), contrast sensitivity (CS) and visual field ...visual function was performed using ...

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