Salmon patch-like conjunctival lesion secondary to long-term administration of topical brimonidine: A case report

INTRODUCTION: Brimonidine is a commonly used intra-ocular pressure-lowering agent for glaucoma patients. Allergic follicular or papillary conjunctivitis is a well-known side effect of brimonidine. Brimonidine is associated with ocular allergic symptoms such as conjunctival hyperemia, stinging sensation, photophobia and, in severe cases, corneal erosions. Here, we report a case of atypical conjunctival lesion following long-term administration of brimonidine. CASE PRESENTATION: We report the clinical findings of a 72-year-old female presenting with a salmon patch-like conjunctival lesion affecting the bulbar and palpebral conjunctiva after long-term use of brimonidine. The finding was suspicious of conjunctival lymphoproliferative disorders. However, upon cessation of brimonidine, along with the administration of short-course topical steroid, a complete resolution of the lesion was evident. Biopsy was not performed as the clinical picture improved with conservative management. No recurrence was observed over 1 year follow up. DISCUSSION: Atypical conjunctival lesions have been described after long-term use of brimonidine. These lesions can mimic the appearance of conjunctival tumors, specifically conjunctival lymphoproliferative disorders, for which multiple investigations are required including invasive conjunctival biopsy. CONCLUSION: Careful observation is recommended for patients with a history of long-term use of brimonidine for the development of atypical conjunctival lesions which may simulate the appearance of conjunctival lymphoproliferative disorders.