SPECTACELS ; 



AND HOW TO CHOOSE THEM. 



BY C. H. VILAS, A. M., M. D. 



Professor of Diseases of the Eye and Ear in the Hahnemann Medical 



College, and Ophthalmic and Aural Surgeon to 



the Hahnemann Hospital, 



Chicago, etc., etc. 



This book is full of interest and instruction to readers of all 

 classes. Designed more especially for the profession, it never- 

 theless does not deal in technicalities or obscure terms and 

 will doubtless lind a large demand among non-professional 

 people. 



In a clear and comprehensive manner it treats of a most 

 important subject, a subject concerning which, far too many er- 

 roneous and dangerous notions prevail. It's aim is to dissemin- 

 ate knowledge, and to prevent the common haphazard custom 

 of choosing Spectacles, a custom so often disastrous to vision or 

 fruitful to discomfort. The Author points out how, within a 

 comparatively recent period, what was once veiled in mystery, 

 has attained a sure place among the sciences ; how the know- 

 ledge of the proper construction, adaptation, and uses of Spec- 

 tacles has grown to great proportions, and has led to a revolu- 

 tion in the treatment of eye affections. Many popular delusions 

 will be dispelled by reading this book. It is valuable alike to 

 the physician and the layman. The former may utilize it in 

 practicing his profession ; the latter will prepare himself to 

 avoid errors fatal to vision. 



All the new and useful cases of trial lenses are described and 

 illustrated and their respective merits and demerits are pointed 

 out. It is clearly shown how the low prices, at which a good 

 set of trial lenses can be obtained, will enable the physicians in 

 general practice to give attention to the fitting of Spectacles 

 and to treating ordinary defects of the vision, thus preventing 

 the frauds so often practiced by itinerant venders. 



The Author's well known accomplishments in this depart- 

 ment of science, have eminently prepared him to skillfully 

 treat so important a subject. The work is illustrated and full 

 of practical hints. 



Price bound in cloth, $1.00. 



DUNCAN BROS., Publishers. 



131 & 133 8. Clark tit., CHICAGO. 



