{"version":"1.0","type":"link","title":"Brock string - Newikis","description":"A Brock string (named after Frederick W. Brock) is an instrument used in vision therapy. It consists of a white string of approximately 10 feet in length with three small wooden beads of different colors.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/b/bf/Brock_String.jpg","thumbnail_width":894,"thumbnail_height":1104}