RT Journal Article SR Electronic T1 Ageing of the Lens JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 74 OP 74 DO 10.1136/bjo.65.1.74-a VO 65 IS 1 A1 R. F. Fisher YR 1981 UL http://bjo.bmj.com/content/65/1/74.2.abstract AB