{"version":"1.0","type":"link","title":"Vision span - Newikis","description":"Vision span or perceptual span is a controversial concept referring to the angular span (vertically and horizontally), within which the human eye has sharp enough vision to perform an action accurately (reading or face recognition). The visual field of the human eye spans approximately 120 degrees…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/d/d9/AP_-_Peripheral_Vision.pdf/page1-250px-AP_-_Peripheral_Vision.pdf.jpg","thumbnail_width":1650,"thumbnail_height":1275}