New truths in ophthalmology / as developed by G. C. Savage.

  • Savage, G. C. (Giles Christopher), 1854-1930.
Date:
1896
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Licence: Public Domain Mark

Credit: New truths in ophthalmology / as developed by G. C. Savage. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    INDICATIONS FOR, AND ADVANTAGES AND TECHNIQUE OF, MUSCLE SHORTENING. In the judgment of the author of this paper, muscle short- ening is indicated in all cases of heterotropia, regardless of the direction or extent of the turning. In many cases of low degrees of squint, the shortening operation alone will ef- fect a cure; while, in a greater number of cases, the shorten- ing of the weaker muscle should be associated with a partial division of the tendon of the stronger muscle, in order to the attainment of the best results. In cases of high degree of exophoria, in which a partial tenotomy of both external recti does not reduce the exophoria within the range of possibility of completing the cure by rhythmic exercise of the interni, the latter should be shortened. In all cases of ex- ophoria, with less than 8° of abduction, shortening of the interni is indicated, not to be associated with even the slight- est tenotomy of the externi. In high degrees of esophoria, not reduced by a partial tenotomy of the interni within the limit of possibility of completing the work by exercising the externi, the latter should be shortened; while in the lower degrees of esophoria, the only operation indicated is the shortening of the externi. In any case of hyperphoria, not reduced to 2° or less by a partial tenotomy of the superior rectus of the hyperphoric eye, the inferior rectus of that eye should be shortened. In all cases where shortening is indi- cated, except in hypertropia and hyperphoria, the operative