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January 1968


Arch Ophthalmol. 1968;79(1):119-120. doi:10.1001/archopht.1968.03850040121024

To the Editor.  —I read with great interest Dr. Schweitzer's communication in the April 1967 issue of the Archives (77:548), dealing with the polygonal pattern of the cornea. I have been photographing the same pattern for over a year (Pentax Spotmatic camera loaded with Agfa Isopan Record Film). With appropriate excitor and barrier filters before the flash and camera, the fluorescent pattern is readily recorded.There are a number of ways of inducing or observing the pattern. For instance, if a glass slide is pressed against the cornea in the presence of fluorescein, a mosaic of dark lines against a fluorescent background may be seen. On removing the glass slide and allowing the subject to blink, the lines take up fluorescein and the polygons become fluorescein-free. The pattern then is identical to that induced by simple massage of the cornea through the lid.In the absence of fluorescein, the

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