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 de

Data was obtained by using the program Gabori Attack; it is presented as a video game. The task is to squish “Gaboris” that slowly emerge from the grey background as quickly as possible with mouse clicks. Each of the 10 participants had exposure to each of the eight spatial frequencies. The size of the room was 6 metres long, four metres wide and three metres in height. The height of the desks that the computers were on measured 80cm. The peak sensitivity average result was recorded at each spatial frequency.

In the one sample test comparing the peak sensitivity 100 the results show a significant difference (t= 105.94287, where p * 0.0005). From these results we can reject the null hypothesis u=100.

Considering the three classical behavioural methods proposed by Fechner, (Sekular, 1994) the method used in our arcade game experiment does resemble similarities to two of these psychophysical methods. Firstly, the method of constant stimuli as the stimuli is presented multiple times in a random order and the responses plotted, similar to the inverted U shaped curve developed in the gabori game.

Some topics in this essay:
Gabori Attack, Fechner Sekular, CSF Methodical, System Penn, DISCUSSION Results, Campbell Robson, CSF Firstly, Contrast Sensitivity, Materials Contrast, Function CSF, contrast sensitivity, spatial frequency, spatial frequencies, peak sensitivity, sekular 1994, arcade game, computer game, contrast sensitivity function, sensitivity function, visual function, hypothesis peak, peak sensitivity 100, sensitivity average result, peak sensitivity average, sensitivity function csf,