This essay is the result of a careful study of 144 cases of convergent strabismus. As the majority of these cases were under observation during a period varying from nineteen months to four years, the author was in the position of collecting very precise information of the ultimate results of his treatment, and of summing up his experience in certain general principles which should be followed in dealing with convergent strabismus.
He strongly insists upon the early use of correcting glasses and most emphatically warns against early operations. "At the outset," he says, "we hold it to be a matter of primary importance that in every case in which their regular use can be depended on, fully correcting lenses should be prescribed as soon as possible after squint has made its appearance." During the first three years the prescription of spectacles is, for obvious reasons, out of question; if the