<unk>  (hereditary progressive arthro-ophthalmodystrophy) is a group of rare genetic disorders affecting connective tissue, specifically collagen.<unk>  is a subtype of collagenopathy, types II and XI.<unk>  is characterized by distinctive facial abnormalities, ocular problems, hearing loss, and joint and skeletal problems. It was first studied and characterized by Gunnar B.<unk>  in 1965.
Stickler syndrome
White Sutton syndrome
Hurler syndrome
Avellis syndrome
Sugarman syndrome
Setleis syndrome
Leschke syndrome
Noonan syndrome