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Microcoria, congenital

Other Names for this Disease
  • Congenital microcoria
  • Congenital miosis
  • MCOR
  • Miosis, congenital
  • Pinhole pupils
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Congenital microcoria is a rare anomaly of the pupils. It is characterized by pupils of less than 2 mm diameter and is caused by the underdevelopment of the dilator pupillae muscle of the iris. This anomaly is associated with nearsightedness and glaucoma.[1][2]
Last updated: 7/19/2013


  1. Rouillac C, Roche O, Marchant D, Bachner L, Kobetz A, Toulemont PJ, Orssaud C, Urvoy M, Odent S, Le Marec B, Abitbol M, Dufier JL. Mapping of a Congenital Microcoria Locus to 13q31-q32. Am. J. Hum. Genet. 1998;
  2. Ramprasad VL, Sripriya S, Ronnie G, Nancarrow D, Saxena S, Hemamalini A, Kumar D, Vijaya L, Kumaramanickavel G. Molecular Vision. 2005; Accessed 3/17/2008.
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In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
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