Dr William Boothe

excimer laser - Laser energy produced by several rare gas- halide mixtures. The term excimer comes from the concept of an energized molecule with two identical components or excited dimer (contracted to one word exci-mer). In PRK the term has for practical purposes become synonomous with the argon-fluoride (ArF) gas version. The wave length of an ArF excimer laser is in the far ultraviolet range at 193 nm.
far sighted - A refractive abnormality of the eye requiring a plus (positive or convex) lens for correction. The term originated because people who are far or distance sighted can see at a distance more clearly than they can see objects which are closer. The medical term is hyperopia or hypermetropia.

Dr Boothe

photocoagulation - The process of tissue destruction accomplished by visible light radiation. Tissue is broken down by the light and "clots" as if it were cooked.

photovaporization - The process of tissue destruction as occurs with infra red light radiation such as with a yag laser. The target tissue is ionized causing plasma formation followed by a shock wave.

Dr William Boothe Surgeon

: Epithelium is the outermost layer of cells of the cornea and is the eye's first defense against infection.

Excimer laser is an ultraviolet laser used in refractive surgery to remove corneal tissue.

Farsightedness is the common term for hyperopia.
Dr Boothe