Paraproteinemic keratopathy associated with monoclonal gammopathy of undetermined significance (MGUS): clinical findings in twelve patients including recurrence after keratoplasty.

A diagnosis of MGUS should be considered in patients with bilateral corneal opacities. The appearance can mimic corneal dystrophies or cystinosis. In our experience, systemic treatment of MGUS did not prevent recurrence of paraproteinemic keratopathy following keratoplasty.