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In the article entitled "Effects of Ultrasonic Waves on the Refractive Media of the Eye" by Dr. Oscar Lavine and his associates, published in the February A. M. A. Archives, the sentence beginning on the eighth line of page 218 and the following sentence should read: "These opacities were reversible, although even after periods of as long as an hour there were enough remaining bubbles to outline the region in which they had been most numerous immediately after irradiation. Figure 9 shows these Zeiss cataracts."
CORRECTION. AMA Arch Ophthalmol. 1952;47(4):550. doi:10.1001/archopht.1952.01700030562022