Publisher's Synopsis
Excerpt from The Functional Examination of the Eye
It is, indeed, difficult for any student to read the meagre descriptions of this examination that are found in text-books and retire with even a clear theoretical under standing of the subject. It is the purpose of the author to make the subject clear beyond peradventure for those who shall read these pages. It is his purpose, in short, to pre sent it in such a way that a student may follow the lines laid down and perform the examination with scientific and mechanical accuracy without further instruction.
A fair success in teaching the subject for a number of years has led him to believe that he has won the right of presenting it. The ventilation of the subject of refraction, while it may be tedious, he believes to be essential for those who know little of the subject, or for those who have forgotten what they once knew. The author desires to call particular attention to the chapter on Presbyopia. To judge from the frequency with which glasses are prescribed for this condition by totally ignorant people, one might imagine it to be a very simple affair. As a matter of fact, it is the most difficult problem in refraction, and a thorough knowledge of it implies a thorough knowledge of all the anomalies of refraction.
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