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Related Experiment Videos

Heredity in congenital esotropia.

J R Griffin, G W Asano, R J Somers

    Journal of the American Optometric Association
    |November 1, 1979
    PubMed
    Summary

    Congenital esotropia shows familial tendencies, with higher prevalence in relatives. Findings suggest a multifactorial inheritance model, not single-gene, indicating increased recurrence risk for affected families.

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    Area of Science:

    • Ophthalmology
    • Genetics
    • Pediatric Medicine

    Background:

    • Congenital esotropia (CE) is a common childhood eye misalignment.
    • The etiology of CE is not fully understood, but familial aggregation suggests a genetic component.
    • Previous studies have indicated a potential genetic influence, but inheritance patterns remain unclear.

    Purpose of the Study:

    • To investigate the familial tendency of congenital esotropia.
    • To identify potential risk factors and inheritance patterns within affected families.
    • To inform clinical practice regarding recurrence risks.

    Main Methods:

    • Selected four families with a proband diagnosed with congenital esotropia.
    • Evaluated available family members for strabismus and other visual anomalies.
    • Assessed potential risk factors, including the accommodative convergence-to-accommodation (AC/A) ratio.

    Main Results:

    • Congenital esotropia was more prevalent in family members compared to the general population.
    • A high accommodative convergence-to-accommodation ratio was a notable finding.
    • No consistent Mendelian inheritance pattern was observed, suggesting complex inheritance.

    Conclusions:

    • Findings support a multifactorial model for congenital esotropia, involving genetic and environmental interactions.
    • Families with a child affected by congenital esotropia have an increased risk of recurrence.
    • Practicing optometrists should be aware of this increased risk in counseling families.

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