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To the Editor.
—The report on the transient myopia caused by hyperglycemia by Dr. Watkin in the Archives (81:115 [Jan] 1969) was very interesting.The following report of a case of myopia is less dramatic, but more striking as to the relation of the myopia to the sugar level.In 1947, and subsequently, I observed a female botanist, 38 years of age, who worked at the University of Texas. She had a very brittle diabetes and had a very keen observation.Her myopia increased and decreased within minutes after blood sugar variations. She used the variation of her visual acuity as substitute for a blood sugar test for many months. Her visual observations were confirmed several times by blood sugar tests.
Lippmann O. COMMENTS ON WATKIN'S JANUARY 1969 ARTICLE. Arch Ophthalmol. 1969;81(6):889. doi:10.1001/archopht.1969.00990010891026