Non-contact tonometer

Details Non-contact tonometer Non-contact tonometer

1996-01-30

1998-03-17

Bahr, Jennifer

Surgery

Truss

Pad

128645, 128646, 128652, A61B 316

Patent

active

057275513

ABSTRACT:
A non-contact tonometer measures an intraocular pressure precisely based on a deformation amount of a cornea when a pressurized pulse of air is injected to the cornea. The intraocular pressure is measured on the basis of the maximum value of a correlation function curve, instead of detecting a peak of a light changing curve.

REFERENCES:
patent: 4947849 (1990-08-01), Takahashi et al.
Wessels et al., "Tonometer Utilization, Accuracy, and Calibration Under Field Conditions", Arch Ophthalmol, vol. 108, (1990) pp. 1709-1712.
Panek et al., "Intraocular Pressure Measurement with the Tono-Pen Through Soft Contact Lenses", American Journal of Ophthalmology, vol. 109, (1990) pp. 62-65.
Ralston et al., "Glaucoma Screening in Primary Care: The Role of Noncontact Tonometry", The Journal of Family Practice, vol. 34, No. 1, (1992) pp. 73-77.
Britt et al., "Microaerosol Formation in Noncontact `Air-Puff` Tonometry", Arch Ophthalmol, vol. 109, (1991) pp. 225-228.
Silver et al., "Validity of Pulsatile Ocular Blood Flow Measurements", Survey of Ophthalmology, vol. 38, (1994) pp. 72-80.

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