Law of refraction : change following increase or decrease of body-weight / by George M. Gould.

  • Gould, George Milbrey, 1848-1922.
Date:
1897
Catalogue details

Licence: Public Domain Mark

Credit: Law of refraction : change following increase or decrease of body-weight / by George M. Gould. 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.

    3/10
    [Reprinted from The Medical News, June 26, 1897.] I^IV OF R E FR AC T! 0 N-C H AN G E FOLLOWING INCREASE OR DECREASE OF BODY- WEIGH r.i By GEORGE M. GOULD, M.D.,- OF PHILADELPHIA. In Starvation, ninety-seven per cent, of the fat of the body is lost before death, and of the remaining t ree per cent, the orbits always retain some and a larger amount proportionately than other localities. Ihis seems to indicate that the cushion of fat blanket- ing the eyeball posteriorly is of great importance to the function of vision, and if so, it would appear natural that great increase or decrease of body- weight consisting mostly in gain or loss of fat might lead to changes of fat-deposits in the orbit’ with consequent variations in pressure upon the eye- ball. If to this consideration we add the noteworthy act that a variation so small as that of one millimeter m the anteroposterior diameter of the eyeball pro- duces the huge ametropic change of three diopters we recognize how slight a difference in orbital pres- sure IS required to account for a marked variation of etrr'of™''' that a dif- siaZvh ’“y produced simply by increase or decrease of posterior pressure «hotd posterior staphyloma or in any way altering _^_itsjh^ diameter would be and 6, 1897. ^ ^ ''I Waslungtou, D. C., May 4, 5,