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David Miller, MD
Boston

Arch Ophthalmol. 1970;83(2):258.

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

To the Editor.

—The question raised by Dr. Sampson as to precisely where is the site of increased scattering in a cornea which has developed edema after contact lens wear was examined by Dr. Isidore Finklestein¹ in his PhD thesis. He placed fluid type scleral lenses on his subjects and then followed the increase in corneal scatter as seen in the slit lamp by quantitative photometry. At the same time, he analyzed the halos seen by his subjects and followed the changes in the intensity of these halos quantitatively. He was able to show that the increased scatter and the increased halo intensity followed each other in a parallel fashion. Realizing that the halos were a diffraction phenomenon, he was able to calculate the particle size necessary to produce the halos he had measured. The calculated particle size was 8µ to 16µ, which is about the size of corneal epithelial . . . [Full Text PDF of this Article]

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