Effect of Screen Contrast Ratio and Luminance Level on Visual Lobe Shape

The effects of screen contrast ratio, luminance level, and their interaction on visual lobe shape were examined in this study. The results showed that luminance level showed noticeable effects only on lobe perimeter. Though slightly larger area was noted upon increasing luminance level, none of the other shape parameters were significantly affected. The luminance level and its interaction with contrast ratio level did not affect any shape parameters. As a narrow range of luminance level and contrast ratio was used in this study, it might not be sufficient to generalize the results on visual lobe characteristics and further study with larger range of testing conditions is needed.