Ocular Cicatricial Pemphigoid (OCP) is a rare chronic autoimmune conjunctivitis characterized by inflammation and scarring of the conjunctiva and cornea. It is caused by autoantibodies targeting the lamina lucida of the basement membrane, resulting in a multi-step pathogenic process involving leukocyte infiltration, pro-inflammatory cytokine release, and epithelial cell destruction. This leads to conjunctival scarring, fornix shortening, entropion, trichiasis and vision loss. Treatment aims to stop disease progression early using long-term systemic immunosuppression.