The case has the wavefront now.
There are only a handful of surgeons performing DLEK in the US. I am not sure on the exact numbers. 50+ patients have been done at the U of Iowa.
Surgery is performed to preserve vision. Any risks/benefits of surgery are discussed with patients, and we let them decide if they want surgery. Most patients want surgery because the corneal edema decreases vision. Depending on where the edema is located, vision can be bad or not symptomatic.