[New methods of refractive corneal surgery. Experimental studies].
In an experimental study the surface characteristics of two fundamentally different lamellar corneal dissection techniques were compared. Using porcine corneae, 9.5 mm lenticles were cut from the whole globe and evaluated by SEM. With an oscillating blade, a smooth cut surface was found in most cases with occasional irregularities. The rotating lamellar keratome had uniform cutting characteristics with a somewhat wavy surface structure, which has not so far been observed in human tissue. By increasing the speed of rotation and decreasing the rate of advance of the blade the surface structure was improved. The two cutting principles and their possible clinical applications are discussed.
Draeger
J
J
Universitäts-Augenklinik, Hamburg.
Böhnke
M
M
Grabner
G
G
Slezak
H
H
Lang
K
K
D000818:Animals; D003315:Cornea / Q000473:pathology / Q000601:surgery*; D054140:Refractive Surgical Procedures; D013525:Surgical Instruments; D013552:Swine
Neue Wege der refraktiven Hornhautchirurgie. Experimentelle Untersuchungen.