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Related Experiment Video

Updated: Mar 24, 2026

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
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PERSISTENT PUPILLARY MEMBRANE OR ACCESSORY IRIS MEMBRANE?.

Monica Gavriş, Ioan Horge, Elena Avram

    Romanian Journal of Ophthalmology
    |March 17, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Accessory iris membrane (AIM) and persistent pupillary membrane (PPM) are congenital iris anomalies. Surgical membranectomy effectively improved visual acuity in a patient with bilateral dense AIM.

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    Area of Science:

    • Ophthalmology
    • Congenital Anomalies
    • Surgical Interventions

    Background:

    • Accessory iris membrane (AIM) and persistent pupillary membrane (PPM) are congenital iris anomalies often confused in clinical practice.
    • Both conditions involve iris strands arising from the collarette, obscuring the pupil, but differ in appearance and pseudopupil presence.
    • Visual axis obstruction necessitates intervention to ensure proper visual development.

    Observation:

    • A 29-year-old male presented with bilateral dense AIM and compound hyperopic astigmatism.
    • Visual acuity was recorded as BCVA OD = 0.6 and BCVA OS = 0.4, with normal intraocular pressure (IOP OU = 17 mmHg).

    Findings:

    • Bilateral membranectomy was performed to address the dense AIM and improve visual acuity.
    • Post-surgery, visual acuity improved significantly to BCVA OD = 0.8 and BCVA OS = 0.8.

    Implications:

    • Surgical membranectomy is an effective treatment for significant visual impairment caused by dense accessory iris membrane.
    • Distinguishing between AIM and PPM is crucial for appropriate management and surgical planning.
    • Restoring visual axis transparency through surgical intervention can lead to substantial improvements in visual acuity.