title: A brief review of non-melanocytic pigmentations of the external ocular structures.
mesh_terms: D005128:Eye Diseases / Q000175:diagnosis* / Q000209:etiology; D005141:Eyelid Diseases / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D010859:Pigmentation Disorders / Q000175:diagnosis* / Q000209:etiology