Excimer laser corneal ablation: absence of a significant "incubation" effect.
Pulse-to-pulse consistency of excimer laser etching of cornea has been examined via two noncontact techniques: photoacoustic probe beam deflection, and time-resolved excimer pulse reflectometry. These methods clearly document the incubation phenomenon accompanying excimer laser ablation of polymethyl-methacrylate and the absence of the effect during polyimide ablation. In comparison, results for corneal ablation indicate consistent tissue etching over a train of pulses. Consequently, incubation appears to have negligible impact on corneal ablation.
Pettit
G H
GH
Center for Devices and Radiological Health, Food and Drug Administration, Rockville, Maryland 20857.
Ediger
M N
MN
Weiblinger
R P
RP
D000162:Acoustics; D000818:Animals; D002417:Cattle; D003315:Cornea / Q000473:pathology / Q000601:surgery*; D006371:Helium; D007834:Lasers; D008028:Light Coagulation / Q000379:methods; D008768:Methylmethacrylates / Q000737:chemistry / Q000528:radiation effects; D009356:Neon; D012117:Resins, Synthetic / Q000737:chemistry / Q000528:radiation effects; D013997:Time Factors; D014466:Ultraviolet Rays
D008768:Methylmethacrylates; D012117:Resins, Synthetic; D006371:Helium; C029945:polyimide resin; D009356:Neon