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Updated: Jun 4, 2026
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Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
Published on: June 17, 2025
Conjunctival Biopsy in Ocular Mucous Membrane Pemphigoid
Anahita Kate1, Trakanta Wannapanich2, Andrew J W Huang3
1From the UPMC Vision Institute, University of Pittsburgh School of Medicine (A.K., V.J.), Pittsburgh, Pennsylvania, USA.
American Journal of Ophthalmology
|June 2, 2026
Summary
Conjunctival biopsy plays a selective role in diagnosing ocular mucous membrane pemphigoid (oMMP). Clinical evaluation may suffice for diagnosis, reserving biopsy for atypical cases to ensure timely treatment and prevent vision loss.
Area of Science:
- Ophthalmology
- Autoimmune Diseases
- Dermatology
Background:
- Ocular mucous membrane pemphigoid (oMMP) is a chronic autoimmune condition causing progressive conjunctival scarring.
- oMMP can lead to severe ocular surface discomfort and vision loss if not treated promptly with immunosuppression.
Purpose of the Study:
- To review the literature regarding the utility and limitations of conjunctival biopsy in the diagnosis of oMMP.
- To clarify the evolving role of biopsy within a comprehensive diagnostic strategy for oMMP.
Main Methods:
- Literature review of published studies on conjunctival biopsy in oMMP.
- Analysis of factors influencing biopsy accuracy and diagnostic yield.
Main Results:
- Conjunctival biopsy findings are crucial for oMMP diagnosis via direct immunofluorescence but can be affected by biopsy site, disease stage, and pathologist expertise.
- Sole reliance on biopsy can delay treatment, negatively impacting visual outcomes.
- Clinical diagnosis may be sufficient when common mimics are excluded and cicatrization is evident.
Conclusions:
- Conjunctival biopsy is not always necessary for oMMP diagnosis.
- Biopsy should be reserved for atypical presentations or when differentiating from other cicatricial conditions.
- A multidisciplinary approach integrating clinical assessment and selective biopsy is key for effective oMMP management.
