Patent References 3237623 3371660 3379901 3453998 3596504 3631849 3690158 3763851 AbstractA method of obtaining a reading of the ocular pulse in its unbiased, natural state by transmitting continuous wave ultrasonic energy to the eye from a source spaced from the eye, receiving said energy reflected back from said eye, and detecting a modulation in said relected energy caused by pulsations of said eye. | |