The Correspondence Section welcomes inquiries and comments of a general or specific nature. The Editors may try to answer some of the questions, but more valuable will be answers volunteered by others who have had especial experience related to the questions posed.
To the Editor:
—The 2 papers: "Photosensitization of the Eye with Methoxsalen" (I. Acute Effect, Arch. Ophthal. 64:346, 1960, and II. Chronic Effects, Arch. Ophthal. 66:689, 1961) by Drs. Cloud, Hakim, and Griffin fail to survive critical analysis regarding the relationship between the experimental methods and the conclusions which were drawn. In each experiment, 2 groups of animals were used: one was exposed to ultraviolet light but not treated with the drug; and the other was exposed to ultraviolet light and treated with the drug. The authors' conclusions in the 2 papers are summarized by their statement in the second paper: "This study confirms the previously published evidence