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Living with Polydactyly-myopia syndrome

A rare inherited condition with an extra finger or toe and nearsightedness that worsens over time.

Understanding Polydactyly-myopia syndrome

Polydactyly-myopia syndrome is a rare condition with an extra digit next to the little finger or toe and worsening nearsightedness (myopia).

It was first described in 1986 in 9 people across 4 generations of a family in Hungary. The extra digit is present at birth. Other features that were listed include hernias and undescended testes.

Signs & symptoms

Symptoms vary from person to person. GARD lists these:

  • Extra finger beside the little finger
  • Nearsightedness (myopia) that worsens
  • Groin hernias
  • Undescended testes

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include bone and joint specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How often should vision be checked and corrected?
Could my other children or relatives have this condition?
Do hernias or other related issues need monitoring?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant

GARD says changes in genes cause this condition but doesn't name a gene. Family history suggests autosomal dominant inheritance, meaning one changed copy of the gene is enough.

Genetic

Also known as: czeizel brooser syndrome; czeizel-brooser syndrome; polydactyly myopia syndrome; postaxial polydactyly with progressive myopia; postaxial polydactyly-progressive myopia syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Polydactyly-myopia syndromeGARD ID 4413 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Polydactyly-myopia syndrome.

Explore the Polydactyly-myopia syndrome blog

Explore research for Polydactyly-myopia syndrome

Explore actively recruiting Polydactyly-myopia syndrome studies with HealthSpark.

HealthSpark

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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