The color of the Eyes

Peter D. Krevat pkrevat at emory.edu
Thu Feb 16 17:26:39 EST 1995


	Mike-

	A chromatophore is a pigment containing cell, and the color of 
the eye depends on the amount and distribution of these cells in the iris 
(the colored part of the eye).  People with blue eyes have pigment only 
on the posterior part of the iris, and people with brown eyes have heavy 
pigment scattered throughout the iris.  Other eye colors are due to 
variations of the above.  Albinism is caused by a deficiency of the 
enzyme tyrosinase, one of the enzymes in the pathway for formation of 
melanin from tyrosine.
	Hope this helps.  If you need more information, let me know.

					Peter Krevat, M. D.
					Atlanta, GA, USA
					pkrevat at emory.edu



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