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Lenz microphthalmia syndrome

Other Names for this Disease
  • Lenz dysplasia
  • MAA (formerly)
  • MCOPS1
  • Microphthalmia Lenz type
  • Microphthalmia or anophthalmos with associated anomalies (formerly)
More Names
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Lenz microphthalmia syndrome is a genetic disorder that causes abnormal development of the eyes and several other parts of the body.  Eye symptoms vary, but may include underdeveloped (small) or absent eyes, cataract, nystagmus, coloboma (a gap or split in structures that make up the eye), and glaucoma. Eye symptoms may affect one or both eyes and may cause vision loss or blindness.  Other signs and symptoms may include abnormalities of the ears, teeth, hands, skeleton, urinary system and occasionally heart defects.[1]  Around 60% of people with this condition have delayed development or intellectual disability ranging from mild to severe.[2] Mutations in the BCOR gene cause some cases of Lenz microphthalmia syndrome. The other causative gene(s) have yet to be identified. This condition is inherited in an X-linked recessive fashion.[1][2]
Last updated: 8/26/2010


  1. Lenz microphthalmia syndrome. Genetics Home Reference. 2008; Accessed 8/25/2010.
  2. Lenz microphthalmia syndrome. GeneTests. Accessed 8/25/2010.
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Basic Information

  • Genetics Home Reference (GHR) contains information on Lenz microphthalmia syndrome. This website is maintained by the National Library of Medicine.
  • The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.

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. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Lenz microphthalmia syndrome. Click on the link to view a sample search on this topic.