Yttrium alumninium garnet. This is a synthetic gemstone used to create the specific wavelength of light for the laser procedure.
Dr. Levinson graduated from the University of Pennsylvania and the University of Maryland Medical School with Honors, and trained in corneal surgery at the prestigious Wills Eye Hospital in Philadelphia. Dr. Levinson has lectured extensively, and has been invited several times to address his colleagues at the annual American Academy of Ophthalmology conference and at the Maryland Society of Eye Physicians and Surgeons. Dr. Levinson also frequently lectures other eye doctors on the treatment of corneal pathology, and his office is approved by the Maryland Optometric Association as a site for clinical observation for continuing education for Optometrists.