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In the preface, the author states that this book is "an outline of the field study which engages the ophthalmic optician." The style in which it is written assumes a fair knowledge of the subject. The style is reminiscent of Chavasse and will not be easy reading for the novice.
Although the book purports to be a compendium covering the whole field of refraction and ocular muscle imbalances in 144 pages, the author spends much valuable space on subjects of little practical importance, such as aniseikonia and dynamic retinoscopy. It is hard to see how it can be of any value to an ophthalmologist.
Adler FH. Some Aspects of Oculo-Refractive Technique.. Arch Ophthalmol. 1949;41(5):658. doi:10.1001/archopht.1949.00900040674025