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WILLIAM W. JOHNSTONE, M.D.

AMA Arch Ophthalmol. 1959;62(1):75-77.

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

In recent years, surveys have indicated that approximately 2% of persons over 40 years of age have undiagnosed glaucoma.^1-3 In order to detect chronic simple glaucoma in its early symptomless stage, it seems desirable that in patients over 40 tensions should be taken routinely during general physical examinations. With this in mind, the Berens-Tolman Ocular Hypertension Indicator was introduced⁴ to the medical profession in 1950 and was later modified somewhat as described in a statistical report of its use by Cholst and Horotivtz.⁵ In the latter paper, the Berens-Tolman and Schiøt instruments were compared on 180 glaucoma patients (numbber of eyes not stated), with use of a 5.5 gm. weight on the Schiøtz tonometer and the 1948 Schiøtz calibration scale. Of 57 eyes with tensions elevated to between 30 and 60 mm. Hg, 54 (95%) registered "high" on the OHI and 3 (5%) registered "normal" (false negatives . . . [Full Text PDF of this Article]

Author Affiliations
Chicago

From the Glaucoma Clinic of the Illinois Eye and Ear Infirmary of the University of Illinois College of Medicine.

Footnotes
Submitted for publication Jan. 7, 1959.

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