Visual Impairment and Progressive Phthisis Bulbi, also known as vipb, is related to eye disease and intraocular pressure quantitative trait locus. An important gene associated with Visual Impairment and Progressive Phthisis Bulbi is MARK3 (Microtubule Affinity Regulating Kinase 3). The drugs Prednisone and Propylthiouracil have been mentioned in the context of this disorder. Affiliated tissues include eye and thyroid, and related phenotypes are ptosis and flat cornea