Most conjunctival nevi are found during the two first decades of life. Beyond this period, the diagnosis must be assessed by histopathology. We report the case of a conjunctival nevus recently discovered in a 33-year-old patient who, additionally, was previously treated for herpetic disciform keratitis. The corneal scar decreased vision. A corneal graft and nevus excision were performed simultaneously. Histopathologic study confirmed the diagnosis of nevus and disclosed the corneal scar changes induced by herpes.