Intractable secondary galucoma is seen in:
Diffuse iris melanomas are associated with intractable secondary glaucomas. 'Iris melanomas are usually nodular, but diffuse tumors can involve the iris stroma extensively and infiltrate the out flow system to cause intractable secondary glaucoma'. Ref: The Wills Eye Hospital Atlas of Clinical Ophthalmology, By William Tasman, Edward A. Jaeger, Wills; The Eye:Basic sciences in Practice, 2nd Edition, Page 422
Diffuse iris melanoma
Nodular iris melanoma
Melanocyte deposits in anterior pa of iris
Melanocyte proliferation in posterior uveal tissue