| NOMENCLATURE |
ULTRASONIC UNIT, DIAGNOSTIC, HUMAN. OPHTHALMIC DIAGNOSTIC TYPE,
THE SOUND SOURCE TO EACH STRUCTURE DETECTED.
ACCESSORIES A/A. AN ELECTRONIC, VERSATILE INSTRUMENT
HAVING AN ULTRASONIC TRANSMITTER AND RECEIVER
SYSTEM DESIGNED SPECIFICALLY AND EXCLUSIVELY FOR
MEDICAL DIAGNOSTIC USE. THE INSTRUMENT EMPLOYS
PULSES OF INAUDIBLE HIGH-FREQUENCY LOW-INTENSITY
SOUND TO DETECT BOUNDARIES BETWEEN STRUCTURES
OF DIFFERING ACCUSTIC IMPEDANCE IN TISSUE. IT PROVIDES
A PRECISE MEASUREMENT OF THE DISTANCE FROM
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