The convergence index as a measure of the converging power / by Alexander Duane.

  • Alexander Duane
Date:
1914
Catalogue details

Licence: In copyright

Credit: The convergence index as a measure of the converging power / by Alexander Duane. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    convergence consequently remote, the discrepancies in the position of the latter, although now somewhat greater, are still relatively small and in no case so great as to be of practical importance. We may say, therefore, that the convergence index is not only a true measure of the converging power, but gives also in all cases a sufficiently accurate notion of the utility of this converging power for the patient—i. e., of its availability in enabling him to look at near objects.