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Living with Anophthalmia/microphthalmia-esophageal atresia syndrome

A rare genetic condition affecting how the eyes and food pipe form, sometimes with brain and growth differences.

Understanding Anophthalmia/microphthalmia-esophageal atresia syndrome

Anophthalmia/microphthalmia-esophageal atresia (AEG) syndrome is a rare condition in which the eyes and other parts of the body, including the esophagus, form differently.

People are usually born without one or both eyes (anophthalmia), or with very small eyes (microphthalmia). Some are born with a blocked esophagus, the tube from the mouth to the stomach. Other features can include brain differences, slow growth, delayed motor skills like walking, intellectual disability, and genital differences. It is seen during pregnancy and in newborns.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Missing eyeballs (anophthalmia)
  • Very small eyes (microphthalmia)
  • Blocked food pipe (esophageal atresia)
  • Abnormal connection between windpipe and food pipe
  • Hearing impairment
  • Undescended testes (cryptorchidism)

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 brain and nervous system specialists, digestive system specialists, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in SOX2 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Pituitary Network Association may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Digestive system specialists (gastroenterologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Expert lists: Pituitary Network Association
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 National Organization of Parents of Blind Children and other patient organizations
  • 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
Would testing the SOX2 gene help our family?
Which specialists should follow vision, feeding, and development?
How is vision affected in the eye tissue that is present?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn
InheritanceAutosomal Dominant
GenesSOX2

GARD says changes in the SOX2 gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene can be enough to cause it.

GeneticNeurologicalEndocrineGastrointestinal

Also known as: aeg - anophthalmia-esophageal-genital syndrome; aeg syndrome; anophthalmia-esophageal-genital syndrome; mcops3; microphthalmia and esophageal atresia syndrome; microphthalmia, syndromic type 3

Patient organizations

Source: NIH GARD · Anophthalmia/microphthalmia-esophageal atresia syndromeGARD ID 1443 · 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 Anophthalmia/microphthalmia-esophageal atresia syndrome.

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