t a.'^ 



THE CANADIAN JOURNAL. 



NEW SE RIES 



No. LXI.— JANUARY, 1866. 



THE OPTICAL DEFECTS OF THE EYE AND THEIR 

 • TREATMENT BY THE SCIENTIFIC USE OF SPEC- 

 TACLES. 



BY A. M. EOSEBEUGH, M.B. 



(Bead before the Canadian Institute, February Brd, 1866.^ 



The following pages were written as an introduction to a course 

 of lectures recently delivered by me on the diseases of the eye. I 

 have not thought it necessary to alter the form, as I propose pub- 

 lishing them as a pamphlet, hoping that they may be useful, not 

 only to the members of my ophthalmic class, but to Canadian 

 medical students generally. 



In their preparation, I must here acknowledge my indebtedness 

 to the elaborate works of Mr. J. Z. Laurence and Mr. J. Soel- 

 berg "Wells, of London, and especially to the very comprehensive 

 treatise of Professor Donders, of Utrecht, published in 1864 by the 

 New Sydenham Society. 



Vol. XI. A 



