The Structure of the Cornea as Revealed by Polarized Light By E. J. NAYLOR
نویسنده
چکیده
Studies of corneal sections in polarized light indicate that there are about ioo lamellae in the cat cornea; the coefficient of fibre birefringence is 0-0030. No evidence was found of preferential orientation of fibre directions. Corneal disks examined by an immersion technique show that the cornea exhibits both form and intrinsic birefringence of positive sign with a micellar refractive index of 1-50-1'52. The values of both form and intrinsic birefringence in various fixatives can be explained on the basis of swelling, which is both interand intra-micellar. The micellar volume according to the Wiener relationships does not exceed 3 per cent.; possible causes of this are discussed.
منابع مشابه
Polarized light studies of corneal structure.
THE importance of the cornea as the major refracting surface of the eye and the peculiar circumstance of its transparency have given rise to investigations since early times. Recent work on the hydration properties of the cornea, for example that of Cogan and Kinsey (1942) and Hart and Chandler (1948), seems to indicate that the problem of transparency will be solved only by an attack over a wi...
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تاریخ انتشار 2006