Optical Truths
Optical Truths
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In our eReader you can find the full English version of the book. Read Optical Truths Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Optical Truths
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again. The — works in the same manner, up to 24. D.
Books on the use of the ophthalmoscope are misleading in Digitized by Google S28 OPTICAL TRUTHS.
two important directions: First, many of them convey the idea, either directly or indirectly, that the authors measure errors of refraction with it, wbich is an impossibility, because not only the patient but the operator would have to be atropized so thoroughly that neither could work the accom- modation, and were that possible, the skill required... to get the same focus on the vertical and horizontal vessels, the vertical Fig:. 61 Pig. 62 Digitized by Google EYE INSTRUMENTS AND MACHINES. 129 being much larger, would be impossible of attainment; hence such claims are either foolish or deliberate lies. Second, they illustrate diseases and alleged diseases and the student aban- dons the instrument because he finds nothing to correspond with the pictures. The real value of the ophthalmoscope lies in the facility it affords for the study of the quality and quan- tity of the blood in every case.
What to read after Optical Truths?
You can find similar books in the "Read Also" column, or choose other free books by Mccormick, Charles, 1858- to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
again. The — works in the same manner, up to 24. D.
Books on the use of the ophthalmoscope are misleading in Digitized by Google S28 OPTICAL TRUTHS.
two important directions: First, many of them convey the idea, either directly or indirectly, that the authors measure errors of refraction with it, wbich is an impossibility, because not only the patient but the operator would have to be atropized so thoroughly that neither could work the accom- modation, and were that possible, the skill required... to get the same focus on the vertical and horizontal vessels, the vertical Fig:. 61 Pig. 62 Digitized by Google EYE INSTRUMENTS AND MACHINES. 129 being much larger, would be impossible of attainment; hence such claims are either foolish or deliberate lies. Second, they illustrate diseases and alleged diseases and the student aban- dons the instrument because he finds nothing to correspond with the pictures. The real value of the ophthalmoscope lies in the facility it affords for the study of the quality and quan- tity of the blood in every case.
What to read after Optical Truths?
You can find similar books in the "Read Also" column, or choose other free books by Mccormick, Charles, 1858- to read onlineMoreLess
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