1944 : A heartless promoter made a small fortune until caught selling these drumstick-like gadgets, which were alleged to promote better vision if used to tap the eyes 200 times a day to improve vision. The balls are of semi-hard rubber and it is not
1944 : A heartless promoter made a small fortune until caught selling these drumstick-like gadgets, which were alleged to promote better vision if used to tap the eyes 200 times a day to improve vision. The balls are of semi-hard rubber and it is not