My purpose in this article is to describe the use of an instrument devised by me for muscle shortening in operations for the correction of squint. A discussion of the subject of squint as a whole and its correction would include fusion and binocular vision, which should be the ultimate aim in all cases in which there is sufficient vision to obtain this end.
While numerous methods of shortening and lengthening the extra-ocular muscles have been employed to produce parallelism, many surgeons prefer to use some method that does not destroy the continuity of the muscle fibers. With this fact in mind, I set about to devise an instrument that would be simple to use, occupy small space in the field of operation, be as accurate as possible in its results, produce the minimum amount of trauma to the muscle, preserve the blood supply to that
Speas WP. SHORTENING AN EXTRA-OCULAR MUSCLE BY TUCKING: A New Instrument. Arch Ophthalmol. 1930;4(4):545–556. doi:10.1001/archopht.1930.00810120105011
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