Abstract
AN accurate tonometer has been described for measuring the pressure within the human eye, and within various other body cavities1,2. It has an exact theory, can be used in any orientation, and is sufficiently fast and gentle so that it does not require anæsthesia for application to the human cornea. The probe of this unit is pressed against the eye and, in essence, if the cornea is momentarily flattened to slightly beyond a pressure sensitive spot on the tip of the flat end of the probe, then the only force sensed will be the intraocular pressure. However, satisfactory results were not obtained on application to sclera. This has now been demonstrated to depend in part on the adjustment of the degree of flatness of the probe end.
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References
Mackay, R. S., Marg, E., and Oechsli, R., Science, 131, 1668 (1960).
Marg, E., Mackay, E. S., and Oechsli, H., Vision Res., 1, 379 (1962).
Duke-Elder, W. S., Textbook of Ophthalmology, 1, 420 (H. Kimpton Co., London, 1932).
Yamamori, A., Jap. J. Ophthal., 4, 175 (1960).
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MACKAY, R., MARG, E. & OECHSLI, R. Arterial and Tonometric Pressure Measurements in the Eye. Nature 194, 687–688 (1962). https://doi.org/10.1038/194687a0
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DOI: https://doi.org/10.1038/194687a0
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