RT Journal Article SR Electronic T1 Is physical activity protective against myopia? JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 1329 OP 1330 DO 10.1136/bjophthalmol-2020-316173 VO 104 IS 10 A1 Foreman, Joshua A1 Crowston, Jonathan G A1 Dirani, Mohamed YR 2020 UL http://bjo.bmj.com/content/104/10/1329.abstract AB