1. The size of the monocular scotoma is 5? degrees of visual angle . 2. It covers about 2 degrees of visual angle in people. 3. This finding has implications for spatial illusions such as the visual angle illusion. 4. For a mathematical calculation of image size versus distance, see Visual angle . 5. Normally, peak contrast sensitivity is at about 4 cycles per degree of visual angle . 6. What matters is the visual angle V which determines the size of the retinal image. 7. The line of sight should always bisect the observer�s visual angle in order to minimize distortion. 8. Describing the few existing explanations for visual angle illusions is beyond the scope of this present entry. 9. It is defined as the number of degrees of visual angle during stable fixation of the eyes . 10. Thus, complex stimuli could be processed as wholes so long as they occupied a small visual angle .
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