RT Journal Article SR Electronic T1 The Ciliary Muscle JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 408 OP 409 DO 10.1136/bjo.13.8.408 VO 13 IS 8 YR 1929 UL http://bjo.bmj.com/content/13/8/408.abstract AB