A 39-year-old Caucasian woman with a history of recurrent conjunctival melanoma of her right eye developed an intrastromal heavily pigmented malignant melanoma, which involved the whole corneal diameter. The patient was treated by corneoscleral lamellar keratoplasty and there has been no evidence of recurrent neoplasm during 4 years of foliowup. This apparently unique presentation of malignant melanoma ofthe cornea is illustrated and the differential diagnosis of corneal pigmentation is discussed.Malignant melanoma of the cornea is very uncommon. Though primary corneal melanoma has been reported'"5 this neoplasm is usually seen in association with an adjacent limbal or conjunctival melanocytic lesion. We describe a patient with a history of recurrent conjunctival melanoma who presented with a black cornea due to extensive malignant melanocytic invasion into corneal stroma.