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Living with Lower eyelid coloboma

A birth difference of the lower eyelid, ranging from a small notch to a missing lid.

Understanding Lower eyelid coloboma

Lower eyelid coloboma is a rare developmental difference in which part of the lower eyelid is missing.

It can affect one or both eyes. The gap can be partial or full-thickness, from a small notch to the entire lid being absent. It is usually triangular and located on the outer third of the lid. It may occur on its own, with facial clefts, or as part of a syndrome.

Signs & symptoms

GARD doesn't list a separate symptom list. Its summary describes this feature:

  • Notch or gap in the lower eyelid
  • Triangular gap on the outer third of the lid

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 ear, nose, and throat specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Ear, nose, and throat specialists (otolaryngologists)
Expert care
Expert lists: World Craniofacial Foundation
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 Prevent Blindness America 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
Does my child's eyelid need surgery to protect the eye?
Does this occur with a syndrome or facial cleft in my child?
Which eye specialists should follow my child?

Quick facts

GARD says it is a developmental difference that forms during early development before birth. It doesn't describe a specific cause.

Also known as: cleft lower eyelid; coloboma of inferior eyelid; coloboma of lower eyelid; full thickness defect of the lower eyelid; inferior palpebral coloboma; lower lid coloboma

Patient organizations

Source: NIH GARD · Lower eyelid colobomaGARD ID 19978 · 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 Lower eyelid coloboma.

Explore the Lower eyelid coloboma blog

Explore research for Lower eyelid coloboma

Explore actively recruiting Lower eyelid coloboma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Lower eyelid coloboma with HealthSpark. Share your city to explore research near you.

  • 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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