Non-contact tonometer

Details Non-contact tonometer Non-contact tonometer

1990-08-28

1992-09-22

Shay, Randy C.

Surgery

Truss

Pad

128648, 128649, A61B 316

Patent

active

051488078

ABSTRACT:
A non-contact, non-invasive tonometer utilizing the technique of angle modulation of high frequency sound waves or high frequency light waves to determine the intraocular pressure of an eye. The angle modulation technique can be either frequency modulation or phase modulation.

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patent: 4819649 (1989-04-01), Rogers et al.
patent: 4928697 (1990-05-01), Hsu
Optics, A. N. Matveev, Mir Publishers Moscow, 1988, pp. 189-205.
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Electronic Communications Systems, William D. Stanley, Reston Publishing Company, Inc. 1982, pp. 181-193.
"A Vibration Tonometer", C. E. T. Krakau, Ophthal. Res. 1:129-139 (1970).
"IOP Measurement Using Sonics and Coherent Optics," J. M. Hamelink, G. L. Cloud; Proceedings of the 29th Annual Conference on Engineering in Medicine and Biology 1976, Boston, MA, vol. 18, P7.13.
"IOP Measurement Using Sonic Excitation and Laser Velocimitry"; Dissertation for the Degree of Ph.D.; Michigan State University, Jack M. Hamelink 1978.
"Ocular Tonometry Through Sonic Excitation and Laser Doppler Velocimetry"; J. M. Hamelink, G. L. Cloud; Journal of Biomechanical Engineering, Nov. 1979 vol. 101/267-270.
"Non-Invasive Ocular Tonometry Using LDV," G. L. Cloud, D. C. Kanistanaux, J. M. Hamelink, PROC 1982 Joint Conference on Experimental Mechanics, Oahu-Maui, HI. May 23-28, 1982, pp. 322-326.

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