Oculoplastic Reconstruction for Eyelid Malignancies & Lamellar Defects
The eyelid is a sophisticated biological shield consisting of two functional layers: the anterior lamella (skin and orbicularis oculi muscle) and the posterior lamella (rigid tarsal plate and conjunctival mucosa). Basal Cell Carcinoma (accounting for >90% of eyelid tumors) and aggressive Sebaceous Gland Carcinoma predominantly affect the lower eyelid and medial canthus. Complete full-thickness surgical excision is necessary to cure the cancer, but leaving eyelid defects unprotected causes severe corneal ulceration, chronic ocular pain, and potential blindness.
Principles of Bilamellar Eyelid Reconstruction
Dr. Vishal Purohit applies specialized oculoplastic principles requiring independent reconstruction of both structural layers:
- Posterior Lamella Replacement: Rebuilding the smooth conjunctival mucosal lining and rigid support using a Hughes tarsoconjunctival flap from the upper lid, a chondromucosal nasal graft, or a hard palate graft to ensure the eyeball is not scratched.
- Anterior Lamella Coverage: Transposing a local skin-muscle flap, such as a Tenzel semicircular flap, Tripier bipedicled flap, or full-thickness retroauricular skin graft, to provide robust vascularity and smooth eyelid movement.
- Eyelid Margin Stability: Securing proper horizontal eyelid tension to prevent postoperative ectropion (outward rolling) or entropion (inward rolling with trichiasis).
Vision Preservation and Cosmetic Symmetry
By restoring dynamic lid closure and normal tear film distribution, bilamellar eyelid reconstruction ensures lifelong corneal safety and seamless aesthetic symmetry with the opposite eye.