Although this paper concerns the form and power of contact lenses, what I have to say holds true of regular lenses as well. The reason, or rather reasons, why I specify contact lenses are these : In the first place, while the oddities in lenses which I am going to mention are theoretically true of all lenses, practically they are feasible mainly in the small, sharply curved contact lenses. In the second place, it was while talking about contact lenses with a number of physicians that I learned of a few erroneous ideas commonly held regarding lenses in general and contact lenses in particular. It was to point out and correct these errors that I was prompted to present this subject. Incidentally, there is a good reason why physicians who have not gone into the theory of lenses extensively should get a few false notions about contact lenses, and this is
PASCAL JI. FORM AND POWER OF CONTACT LENSES. Arch Ophthalmol. 1939;22(3):399–402. doi:https://doi.org/10.1001/archopht.1939.00860090065007
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