Abstract
The fitting of contact lenses has been more or less a trial and error procedure. There is no doubt that the molded plastic lens is easier to adjust than the old type glass lens. The difficulty has been in knowing what adjustments are necessary in order to fit the individual eye. After observing thousands of contact lenses, we have worked out a scientific method of adapting these devices which has proved to be most satisfactory. Simple rules have been formulated which may be applied in every case. They eliminate guesswork and give complete assurance and confidence that the lenses will be fitted correctly and skilfully, according to plan. <h3>PROCEDURE</h3> In the fitting of contact lenses one must bear in mind the following factors : (1) convergence of the eyes; (2) pressure of the lids, and (3) gravity drop. To compensate for these factors, a contact lens should be fitted so that
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