Question: Is ocular melanosis a risk factor for uveal melanoma?

Context:
Ocular/oculodermal (oculo[dermal]) melanocytosis is a congenital periocular pigmentary condition that can lead to the development of uveal melanoma, estimated at 1 in 400 affected patients.
Melanosis oculi is often underestimated as a risk factor for uveal melanoma and glaucoma. Ophthalmic surveillance, every 6 or 12 months is important, in patients with ocular melanocytosis for early detection of high risk diseases.
 One of about 400 patients with ODM followed for life is estimated to develop uveal melanoma. Excessive melanocytes in the uveal tract in ODM may provide the biologic basis for susceptibility to the development of uveal melanoma. Patients with ODM should be monitored ophthalmoscopically, especially during the susceptible period, for the development of uveal melanoma. The authors suggest that a national registry of ODM patients be created and prospective data collected to better assess the risk of developing uveal melanoma.
In the white population, an association between oculo(dermal) melanocytosis (ODM) and uveal melanoma is well recognized. 
Malignant melanomas may arise in the uveal tract, the conjunctiva, the skin of the eyelid, or the orbit. Risk factors so far identified include pre-existing choroidal naevi for uveal melanomas, primary acquired melanosis (PAM) for conjunctival tumours, and ocular and oculodermal melanocytosis for uveal and orbital lesions. 
Risk factors so far identified include pre-existing choroidal naevi for uveal melanomas, primary acquired melanosis (PAM) for conjunctival tumours, and ocular and oculodermal melanocytosis for uveal and orbital lesions.
Phacomatosis pigmentovascularis of cesioflammea type in 7 patients: combination of ocular pigmentation (melanocytosis or melanosis) and nevus flammeus with risk for melanoma.
In the fourth case the melanoma was detected in a routine examination and we were able to apply a preserving treatment with I125 brachytherapy.DISCUSSION: Melanosis oculi is often underestimated as a risk factor for uveal melanoma and glaucoma.
Association of ocular and oculodermal melanocytosis with the rate of uveal melanoma metastasis: analysis of 7872 consecutive eyes.
Risk factors so far identified include pre-existing choroidal naevi for uveal melanomas, primary acquired melanosis (PAM) for conjunctival tumours, and ocular and oculodermal melanocytosis for uveal and orbital lesions
In the fourth case the melanoma was detected in a routine examination and we were able to apply a preserving treatment with I125 brachytherapy.Melanosis oculi is often underestimated as a risk factor for uveal melanoma and glaucoma
In this study, patients with melanocytosis who developed uveal melanoma were found to have double the risk for metastasis compared with those without melanocytosis.To determine the relationship of oculo(dermal) melanocytosis to the prognosis of patients with uveal melanoma.Retrospective chart review of 7872 patients with uveal melanoma treated at the Ocular Oncology Service, Wills Eye Institute, from August 25, 1970, through August 27, 2008.Enucleation, plaque radiotherapy, local resection, or thermotherapy.Metastasis and death.Of 7872 patients with uveal melanoma, oculo(dermal) melanocytosis was present in 230 (3%)
By multivariable analysis, the factors predictive of metastasis in patients harboring uveal melanoma associated with oculo(dermal) melanocytosis were increased tumor thickness (P = .001) and the presence of subretinal fluid (P = .05), and the only factor predictive of death was increased tumor thickness (P = .009). 
In the fourth case the melanoma was detected in a routine examination and we were able to apply a preserving treatment with I125 brachytherapy.Melanosis oculi is often underestimated as a risk factor for uveal melanoma and glaucoma.
Risk factors so far identified include pre-existing choroidal naevi for uveal melanomas, primary acquired melanosis (PAM) for conjunctival tumours, and ocular and oculodermal melanocytosis for uveal and orbital lesions.
CONCLUSIONS AND RELEVANCE Patients with uveal melanoma associated with oculo(dermal) melanocytosis have double the risk for metastasis compared with those with no melanocytosis.
By multivariable analysis, the factors predictive of metastasis in patients harboring uveal melanoma associated with oculo(dermal) melanocytosis were increased tumor thickness (P = .001) and the presence of subretinal fluid (P = .05), and the only factor predictive of death was increased tumor thickness (P = .009).
CONCLUSIONS AND RELEVANCE Patients with uveal melanoma associated with oculo(dermal) melanocytosis have double the risk for metastasis compared with those with no melanocytosis.

Answer: Yes, ocular melanosis (melanosis oculi) is a risk factor for uveal melanoma.
Exact answer: yes