Research
Ongoing Research
Our current studies look at how visual function is measured: making acuity testing work for patients with very low vision, setting lighting standards for reliable results, and comparing objective electrophysiological measures with what patients report seeing.
June – August 2024
Comparative ability of Freiburg Vision Test (FrACT) and Berkeley Rudimentary Vision Test (BRVT) to quantify non-numerical visual acuity
The study aims to compare the ability of the Freiburg Acuity and Contrast Test (FrACT) and Berkeley Rudimentary Vision Test (BRVT) to quantify visual acuity (VA) in patients who score non-numerical VA using standard charts and in artificially degraded subjects.
Determining the Effect of Light Intensity on Visual Acuity and Contrast Sensitivity
This study aims to assess the effect of room illumination and chart luminance on visual acuity and contrast sensitivity. Results from the study will provide an evidence-based recommendation on luminance and illumination levels that produce valid, repeatable, and reliable visual acuity measures, as well as serve as a basis for further studies to determine the effect of light on other measured visual parameters.
Effect of type of stimulus degradation on agreement between psychophysical acuity and VEP-based acuity
The notion that different diseases differ in their optical effect will be simulated in the present study through the use of different types of artificial stimulus degradation, in particular dioptric and gaussian blur. With gaussian blur, VEP acuity, psychophysical grating acuity, and psychophysical Landolt C acuity is expected to show better agreement than with dioptric blur. With the latter, VEP acuity and psychophysical grating acuity is expected to deviate from psychophysical Landolt C acuity.
