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Frederic L. Lizzi, MS; William J. Burt, MA; D. Jackson Coleman, MD

Arch Ophthalmol. 1970;84(5):635-640.

Abstract
Examinations of ultrasonic radiation with a Schlieren optical system have demonstrated that the characteristics of ultrasonic beams can be significantly altered by acoustic phenomena which occur in lens and sclera. The magnitude of these alterations is critically dependent upon the position and orientation of the incident ultasonic beam. Both diagnostic and therapeutic piezoelectric transducers, operating at frequencies between 1 and 10 megahertz, were employed in this study. Transmission of ultrasound through bovine lenses is accompanied by shifts in the central axis, alterations in the width, and lower intensities in the transmitted beam. Transmission through samples of bovine sclera results in significant alterations in beam characteristics only when the central axis of the incident beam is nearly tangent to the scleral surface.

Author Affiliations
New York

From the Riverside Research Institute (Mr. Lizzi and Mr. Burt) and the Institute of Ophthalmology, Columbia-Presbyterian Medical Center (Dr. Coleman), New York.

Footnotes
Submitted for publication Feb 20, 1970.

Reprint requests to Riverside Research Institute, 80 West End Ave, New York 10023 (Mr. Lizzi).

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES

History of Ophthalmic Ultrasound
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