Differentiating Trichiasis from Entropion: Understanding Eyelash Contact with the Eye
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By
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Antonio Augusto V. Cruz
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Maria Paula S. Facchin
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Richard C. Allen
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September 25, 2026
Clinical Scorecard: Differentiating Trichiasis from Entropion: Understanding Eyelash Contact with the Eye
At a Glance
| Category | Detail |
|---|
| Condition | Trichiasis |
| Key Mechanisms | Misdirected eyelashes contacting the ocular surface without lid-margin inversion. |
| Target Population | Patients with eyelash contact with the eye, particularly in the context of trachoma. |
| Care Setting | Ophthalmology |
Key Highlights
- Trichiasis is characterized by misdirected eyelashes contacting the eye.
- Entropion involves inward turning of the lid margin, differentiating it from trichiasis.
- Management of trichiasis includes various techniques such as epilation and laser treatment.
- Confusion exists in literature regarding the definitions of trichiasis and entropion.
- Trachomatous trichiasis is a misnomer; it should be referred to as trachomatous entropion.
Guideline-Based Recommendations
Diagnosis
- Differentiate trichiasis from entropion and distichiasis based on eyelash direction and lid margin position.
Management
- Trichiasis management includes epilation, electrolysis, and other techniques to redirect lashes.
Monitoring & Follow-up
- Monitor for coexistence of trichiasis and entropion post-surgery.
Risks
- Mismanagement may occur if trichiasis is incorrectly defined or treated as entropion.
Patient & Prescribing Data
Patients with eyelash contact with the ocular surface, particularly those with a history of trachoma.
Surgical correction of entropion does not eliminate trichiasis; additional treatment may be necessary.
Clinical Best Practices
- Use precise definitions for trichiasis and entropion to avoid confusion in management.
- Refer to the World Health Organization guidelines for surgical procedures related to trichiasis and entropion.
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