TY - JOUR T1 - A NEW FORM OF BIFOCAL LENS JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 188 LP - 188 DO - 10.1136/bjo.3.4.188 VL - 3 IS - 4 AU - E. Erskine Henderson Y1 - 1919/04/01 UR - http://bjo.bmj.com/content/3/4/188.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -