Contact glasses for use with high power lasers

✍ Scribed by Didier Riquin; Franz Fankhauser; Hanspeter Lörtscher

• Publisher: Springer Netherlands
• Year: 1983
• Tongue: English
• Weight: 958 KB
• Volume: 6
• Category: Article
• ISSN: 0165-5701
• DOI: 10.1007/bf00141128

✦ Synopsis

Two new contact glasses, one for irradiation of the iris and the other for irradiation of pathological structures \xithin the pupillary and retropupillary regions are described. First order geometric considerations using the Young-Weierstrass imaging theorem indicate nearly aberration-free, stigmatic focussing, even for large numerical apertures. For surgical tasks utilizing high-power lasersl excellent focussing of strongly convergent ray-bundles which lead to small focus diameter and large diameters while passing through the pre-fcml optical media are seen to be essential. Thus the efficiency of the laser-surgical treatment. its reliability, as well as secusity and harmlessness within the pre-focal media are increased.

* Note: The theoretical focal point diameter of the laser in air was taken to be 75 /~m as it is in the MICRORUPTOR 2 in multimode operation.