To the Editor.
—"Early Detection of Xerophthalmia by Impression Cytology"1 is a thought provoking article.The authors' impression cytology studies appear to confirm a previous clinical diagnosis of xerophthalmia in selected patients. This suggests that a more appropriate title for the article might be "Impression Cytology in Clinically Diagnosed Xerophthalmia."The preliminary summary of basic information concerning xerophthalmia emphasizes references published between 1981 and 1984, and primarily by one of the authors. The public health and clinical aspects, as well as the cytologic characteristics, of xerophthalmia have long been thoroughly documented. McLaren's scholarly work2 is, as might be said in certain places in the East, the father and mother of all publications on this subject. It should be referred to by any physician concerned with malnutrition and the eye.In the 32 preschool children studied in India, a diagnosis of nightblindness was made. It is extremely difficult
Caccamise WC. Early Detection of Xerophthalmia by Impression Cytology. Arch Ophthalmol. 1986;104(7):970–971. doi:10.1001/archopht.1986.01050190028006
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