Coloboma of eyelid

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Coloboma of eyelid

ORPHA:98946Morphological anomaly

What it is

A rare, genetic, developmental defect of the eye characterized by a uni- or bilateral, symmetrical or asymmetrical, partial or full thickness defect of the superior or inferior eyelid margin, ranging in size from a small notch to complete absence of the entire lid, typically located on the medial to lateral third of the eyelid, resulting in an unprotected cornea and thus possibly leading to exposure keratopathy and vision impairment. It may occur isolated, be associated with other ocular defects or be part of a craniofacial syndrome, such as Treacher-Collins or Goldenhar syndrome.

Key facts

Classified as
Morphological anomaly

Genes

ABCB6Disease-causing germline mutation(s)
FZD5Disease-causing germline mutation(s) (gain of function)
PAX6Disease-causing germline mutation(s)
SALL2Disease-causing germline mutation(s) (loss of function)

ICD-10 codes

Q10.3filed under a broader ICD-10 category — shared with 12 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

MONDO 0020357OMIM 620731UMLS C0521573

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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