Bilateral diffuse uveal melanocytic proliferation is a paraneoplastic phenomenon characterised by:

  • several pigmented and non-pigmented, benign choroidal tumours throughout the uveal tract of each eye
  • blindess
  • cataract
  • glaucoma.




This condition is caused by a systemic malignancy, such as lung cancer. Although the ocular tumours can regress if the underlying cancer is successfully treated, vision does not improve.