Large bilateral corneal ulcers caused by debromoaplysiatoxin from the blue-green alga Lyngbya majuscula in a fisherman

Toxic seaweed dermatitis is caused by toxins of the marine cyanobacterium Lyngbya majuscula after sea bathing in some tropical area. This rarely described irritant dermatitis results in papular and bullous lesions, mainly in the genital area but severe ocular lesions can occur.