Contrast sensitivity near borders: significance of test stimulus form, size and duration.
D000221:Adaptation, Ocular; D000293:Adolescent; D000328:Adult; D003624:Darkness; D005556:Form Perception; D006801:Humans; D008027:Light; D008266:Macula Lutea / Q000502:physiology*; D010470:Perceptual Masking; D010775:Photic Stimulation; D010783:Photometry; D013997:Time Factors