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To the Editor.
—I wish to add the following thoughts to the comments of William E. Stacy, OD, and David Miller, MD, that were published in the correspondence section of the Archives (80:813, 1968).Stacy's statement that, "The sclerotic scatter technique primarily reveals irregularities in the stromal rather than the epithelial layer of the cornea." Properly done, this technique of biomicroscopy will reveal the most discrete opacities and irregularities anywhere in the cornea from the air-precorneal tear interface anteriorly to the endothelialaqueous interface posteriorly. In itself, however, the technique cannot localize exactly where in the corneal tissue the opacity is located.Secondly, Dr. Stacy is apparently laboring under the common misconception that the faintly grayish, centrally located disciform opacification seen by sclerotic scatter illumination in patients wearing corneal contact lenses is located in the stroma when, in fact, all clinical evidence now points to the deeper layers of the