Choroidal malignant melanoma is the most common primary adult ocular malignancy. Primary choroidal melanoma arises from melanocytes within the choroid. Patients with choroidal melanoma may present with or without visual symptoms. Asymptomatic tumors are more frequent and often are detected only at routine eye examinations. Melanotic melanoma has intrinsic T1and T2 weighted shortening effects, aiding histological diagnosis, whereas Amelanotic melanoma or mildly pigmented lesions of melanoma donot demonstrate these characteristic Magnetic Resonance imaging features.

We report a 58 year old male patient with progressive visual impairment and loss of vision of the right eye that had been evolving for 1 year, evaluated clinically and radiologically by real time grey scale B-Mode ultrasonography (USG) & Magnetic Resonance imaging (MRI).