PETER GEORGE GROSS
Medical Practice in Cynwyd, PA

6030343, Feb 29, 2000

Sep 3, 1997

8/923052

Vladimir Chechersky - Ardmore PA
Peter George Gross - Bala Cynwyd PA

PGVC LP - Bryn Mawr PA

A61B 316

600399

An ultrasonic, non-contact tonometer for measuring the intraocular pressure (IOP) of an eye utilizing a single ultrasonic beam of appropriate frequency and power which simultaneously accomplishes both an ocular deformation and its measurement is provided comprising an ultrasonic transducer assembly, utilizing either a traditional head rest or a goggle-type adapter for precisely reproducible positioning of the transducer assembly relative to the eye allowing for distance and alignment adjustments, and an electronic section for signal processing, quality of precision monitoring and for the direct display of the IOP reading. A process for IOP measurement comprising the steps of continually tracking a reference phase shift between the incident and reflected beams while the instrument is in a continuous-wave low-power mode, powering up the incident beam to produce a short tone burst (amplitude surge) carrying an acoustic pressure to deform the eye and measuring the change in the phase shift of the reflected beam caused by the deformation is also provided.

5052795, Oct 1, 1991

Mar 16, 1989

7/324178

Peter G. Gross - Bala Cynwyd PA

A61B 310

351218

An ophthalmoscopic procedure and ophthalmoscope for quantitative measurement of fundus structures and, in particular, the area of neuroretinal rim are disclosed. Using an ophthalmoscope, a diverging beam of light is projected at a selected fundus structure of the eye being examined. The angle of divergence of the beam is determined from which the light spot size is calculated. A comparison of the light spot and fundus structures is made to measure the fundus structure.