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To evaluate explanations for contrast sensitivity (CS) losses in subjects who have mild nonproliferative diabetic retinopathy (NPDR) or no diabetic retinopathy (NDR) by measuring and modeling CS in luminance noise.
This article was published in the following journal.
Name: Investigative ophthalmology & visual science
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 n...
Cells in the peripheral retina tend to have higher contrast sensitivity and respond at higher flicker frequencies than those closer to the fovea. Although this predicts increased behavioural temporal ...
To determine the effects of astigmatism on contrast sensitivity (CS).
Using near-threshold stimuli, human color sensitivity has been shown to decrease across the visual field, likely due in part to physiological differences between the fovea and periphery. It remains un...
To compare the sensitivity of non-contrast CT to endoscopy for detection of renal calculi. Imaging modalities for detection of nephrolithiasis have centered on abdominal x-ray (KUB), ultrasound (US), ...
The purpose of this study is to build a database of results from a new test that measures contrast sensitivity (the Spaeth-Richman Contrast Sensitivity Test (SPARCS)). Contrast sensitivity...
Pterygium is the growth of conjunctival tissue onto the cornea, usually from the nasal quadrant of the cornea.Visual acuity may be reduced due to direct invasion of the visual axis or asti...
The Spaeth-Richman Contrast Sensitivity (SPARCS) test is a new method of assessing contrast sensitivity. The test is performed on any standard computer with internet access. Patients will...
The primary aim of the Erlangen´s Glaucoma Contrast Sensitivity-Study (EGCS-Study) is the evaluation of the diagnostic and prognostic validity of a diagnostic procedure, measuring contras...
Purpose: To determine whether implantation of an intraocular lens (IOL) with a modified anterior and posterior aspherical surface (Akreos AO, Bausch & Lomb,Inc) results in reduced ocular a...
Absent or reduced sensitivity to cutaneous stimulation.
A state of decreased activity in animals characterized by depressed metabolism, reduced body temperature, and low sensitivity to external stimuli.
Ketonic amines prepared from the condensation of a ketone with formaldehyde and ammonia or a primary or secondary amine. A Mannich base can act as the equivalent of an alpha,beta unsaturated ketone in synthesis or can be reduced to form physiologically active amino alcohols.
Non-invasive diagnostic technique for visualizing the PANCREATIC DUCTS and BILE DUCTS without the use of injected CONTRAST MEDIA or x-ray. MRI scans provide excellent sensitivity for duct dilatation, biliary stricture, and intraductal abnormalities.
The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measurements of this visual function are used to evaluate visual acuity and to detect eye disease.
Diabetes is a lifelong condition that causes a person's blood sugar level to become too high. The two main types of diabetes are: type 1 diabetes type 2 diabetes In the UK, diabetes affects approximately 2.9 million people. There are a...