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Open Manometer Studies

ROBERT A. MOSES, MD

Arch Ophthalmol. 1964;71(5):691-692.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

There is no report in the literature on the relationship of the weight of the Schiotz tonometer footplate to scale reading. That there is a relationship is the subject of this report.

Method

Eye Bank eyes were cannulated through the posterior chamber, the cannula tip then passing into the pupil. The cannula was connected to an open saline reservoir of large capacity. The head of a Mueller electronic tonometer was fixed to one arm of a balance. Variation of footplate weight was accomplished by weighting the pan on the other balance arm (Fig 1). The saline reservoir was set at 40 cm above the limbus. The 7.5 gm plunger load was employed in all experiments. Six eyes were used.

Results

Open manometer scale reading increases with footplate weight at a rate of about 0.3 scale units per gram. The results are summarized in Fig 2.

Comments

Kronfeld¹ noted that . . . [Full Text PDF of this Article]

Author Affiliations
St. Louis

From the Department of Ophthalmology and the Oscar Johnson Institute, Washington University School of Medicine.

Footnotes
Submitted for publication Nov 26, 1963.

This investigation was supported in part by a research grant, NB-04774-01, from the National Institute of Neurological Diseases and Blindness of the National Institutes of Health, Public Health Service. The research relating to this study was also financed in part under a grant to Washington University School of Medicine made by the Alfred P. Sloan Foundation, Inc. The grant was made upon recommendation of the Council for Research in Glaucoma and Allied Diseases. Neither the Foundation nor the Council assumes any responsibility for the published findings in this study.

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