A System of Mature Medicine as Taught in McCormick Medical College

A System of Mature Medicine as Taught in McCormick Medical College

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...like a great many others who have been taught the truth and had it proved to them, he preferred to-accept the blufi'er's story--until after 'I had finished with the following explanation. The strain on the patient, uncorrected, was: For Accommodation: ............ Automatic Convergence: ......... Negative pull 6th nerves: ..........L-1-25 R. 1.25 Total........................ 10.00X60X60X 16 = 576,000 units, all of which was saved by the lenses, making patient an emmetrope. provided 2.50 was the total amount of hyperopia. Then putting the prisms on caused a strain of 172,800 units daily, which, deducted from the 576,000 saved by the lenses, left a net saving by the lenses of 403,200, in spite of the prisms. That was why the prisms did "good" in that case. He saw the point and came over to my side at once. Then I knocked him down with the following proof that the prisms really did good in that case: I proposed that we consider the patient a hyperope of 3.50, because I knew no Allen graduate ever came within a diopter of a correction; therefore the strain would be: For Accommodation: ..............L-3-50 R. 3.50 Automatic Convergence: ...........L-1-75 R. 1.75 r 11 an N;.........I--1-T5 1 ega ive pu 1 erves R. L75 ' Total........................ 14.00X6oX60Xl6 = 806.400 units. Of this amount 576,000 was saved by the + 2.50 spheres prescribed, leaving a hyperopia of 1.00 diopter uncorrected, necessitating the strain: For Accommodation: .......................L-100 R. 1.00 Automatic Convergence: ....................L--50 R..50 Negative Pull 6th Nerves: ................ "L-59 R. 50 Total................................ 4.50; but, the 2-degree prisms bases out, made the.50 convergence in each eye a necessity, ...show more

Product details

  • Paperback | 134 pages
  • 189 x 246 x 7mm | 254g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236749014
  • 9781236749017