Blurred vision OU; Unsteady gaitA 68-year old male with bilateral proptosis, dim, blurred vision and transient obscuration of vision with diplopia OS. Previous history significant for diabetes insipidus and problems with postural balance.VA: 20/25 OD, 20/800 OS; Color plates: 9 missed OD; All OS; RAPD > OS to OD; Exophthalmometry: 22 OD, 25 OSMRIXanthoma cells mixed with mononuclear inflammatory infiltrateSurgery1. Miller, RL, Sheeler, LR, Bauer, TW, Bukowski, RN: Erdheim-Chester disease. Case report and review of literature. Amer J of Md. 80:1230-1236, 1986. 2. Shields, JA, Karcioglu, ZA, Shields, CL, Eagle, RC, Wong, S: Orbital and eyelid involvement with Erheim-Chester disease. A report of two cases. Arch of Ophthal. 109:850-854, 1991. 3...