OCULAR LOCALIZATION OF PIGMENTATION IN OC ULODERMAL MELANOCYTOSIS

Sixteen patients with oculodermal melanocytosis (Nevus of Ota, Congeni tal ocular melanocytosis) were investigated for the location and the d ensity of the ocular pigmentation, the increase in intraocular locatio n and the malignant transformation. In all cases, conjuctivo-scleral d ispersion pattern appeared as dispersed patches without any predominan t site but a diffuse involvement of the angle. This finding points out that ODM may exhibit a characteristics dispersion pattern of pigmenta tion which is characteristic for ODM. For 14 patients intraocular pres sures were less-than-or-equal-to 18 mmHg, and for remaining 2 patients 21 and 22 mm Hg. Glaucomatous optic disc or perimetric changes were n ot found in any patient. In one case, a histologically verified ciliar y-choroidal melanoma at a superior-temporal site co-existed at the sam e location as the ODM.