Valproic acid Recruiting Phase 2 Trials for Stage IIA Intraocular Melanoma / Stage IIIC Intraocular Melanoma / Iris Melanoma / Ciliary Body and Choroid Melanoma, Small Size / Stage I Intraocular Melanoma / Stage IIB Intraocular Melanoma / Stage IIIA Intraocular Melanoma / Stage IIIB Intraocular Melanoma / Ciliary Body and Choroid Melanoma, Medium/Large Size Treatment