Comparing the use and accuracy of an arcade game for Measuring the Contrast Sensitivity Function.
A new method of assessing vision known as the Contrast Sensitivity Function (CSF) has emerged. It is important to measure the sensitivity of the visual system for humans and other animals as it offers information regarding individual visual function capabilities. .
Contrast Sensitivity testing complements and extends the assessment of visual function performed in traditional acuity tests.
A computer program "Gabori Attack" was used among 10 participants to test the use and accuracy of an arcade game to measure the CSF. Methodical limitations prompt the expectation that the method will not be as accurate as previous methods.
Practical applications include the changes in vision with age and reasons for this to occur.
The most widely used measure of visual resolution is visual acuity. Acuity is based on the size of the smallest detail in a visual target. The value of visual acuity measurements is well proven for correcting refractive errors. However a limitation is that individual variation in standard measurements of visual acuity is rarely able to predict individual variation in performance, such as target detection and identification (Ginsburg, 1983). The letter "E" acuity chart, developed by Snellen in 1862, has long been accepted as the standard for vision screening (Block, D., and Bosworth, M., 1992). .
In the past two decades a new method of assessing vision has emerged, the measurement of the contrast sensitivity function (CSF). Computerised formats also available that measure contrast sensitivity functions include Nicolet CS 2000 vision Tester and wall chart VISTECH Contrast Sensitivity test System (Long and Penn, 1987). These methods expected the peak sensitivity to be 100.
Today, the CSF is typically measured using sine-wave gratings as targets instead of the letter optotypes typically used in tests of acuity.
