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During a fellowship at the University of Texas-Houston's Hermann Eye Center, Updegraff worked for Stephen G. Slade, M.D., [8] then one of only two surgeons in the United States performing keratomileusis, [9] and was a member of the team chaired by Slade and Luis A. Ruiz, M.D., that developed LASIK. [8]
LASIK or Lasik (/ ˈ l eɪ s ɪ k /; "laser-assisted in situ keratomileusis"), commonly referred to as laser eye surgery or laser vision correction, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism. [1]
One conspicuous difference between SMILE and LASIK is the size and shape of the corneal incision. In LASIK, the surgeon performs a 270-degree, 20 mm long incision, while in SMILE the so-called "side cap cut", which is the incision through which the surgeon extracts the lenticule, is usually about 4 mm long. [5]
Laser Blended Vision can be achieved through laser eye surgery, usually performed as LASIK, although surface laser eye surgery PRK or LASEK can be used to produce the effect. Laser Blended Vision works by increasing the depth of field of each eye through subtle changes in the optics of the corneal spherical aberration. [2]
Most modern lasers will automatically center on the patient's visual axis and will pause if the eye moves out of range and then resume ablating at that point after the patient's eye is re-centered. The outer layer of the cornea, or epithelium, is a soft, rapidly regrowing layer in contact with the tear film that can completely replace itself ...
As a fellowship director at the Berkeley Eye Center, he mentors emerging ophthalmologists and is involved with educational programs focused on improving the quality of care for patients. He is a diplomate of the American Board of Ophthalmology, a fellow of the American Academy of Ophthalmology, [11] and the American College of Surgeons.