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Genetic and Rare Diseases Information Center (GARD)

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Microcoria, congenital

Other Names for this Disease
  • Congenital microcoria
  • Congenital miosis
  • MCOR
  • Miosis, congenital
  • Pinhole pupils
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What are the symptoms of congenital microcoria?

Symptoms of congenital microcoria include small pupil size (< 2 mm), iris transillumination defects, and reduced or absent response to mydriatic drugs.[1]
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.