Condition: Nance-Horan Syndrome

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Members in the community range from 3 to 6 years old

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About Nance-Horan Syndrome

Nance-Horan syndrome is a rare genetic disorder that may be evident at birth (congenital). It is primarily characterized by abnormalities of the teeth and clouding of the lens of the eyes (congenital cataracts), resulting in poor vision. Additional eye (ocular) abnormalities are also often present, such as unusual smallness of the front, clear portion of the eye through which light passes (microcornea) and involuntary, rapid, rhythmic eye movements (nystagmus). In some cases, the disorder may also be associated with additional physical abnormalities and/or intellectual impairment. The range and severity of symptoms may vary greatly from one person to another, including among affected members of the same family.

Nance-Horan syndrome is inherited as an X-linked trait that it is usually fully expressed in males only. However, females who carry a single copy of the disease gene (heterozygotes) may manifest some of the symptoms and findings associated with the disorder. These may include microcornea and/or clouding of the lens of the eyes (posterior sutural cataract). Symptoms are less severe than those of affected males, potentially causing only slightly decreased clearness or clarity of vision (visual acuity). In some cases, abnormalities of the teeth may also be present. Intellectual impairment rarely occurs in females.

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Last updated on May 09 2018 at 23:42
Disclaimer: The list and ratings above are for informational purposes only, and is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. The goal of the information is to provide you with a comprehensive view of all available treatments, but should not be construed to indicate that use of any one treatment is safe, appropriate, or effective for you. Decisions about use of a new treatment, or about a change in your current treatment plan, should be in consultation with your doctor or other healthcare professional.