Internal Sclerostomy With the Er:YAG Laser Using a Gradient-Index (GRIN) Endoscope

Autor: Jean-Marie Parel, Atsushi Mizota, Pascal O. Rol, Michihiko Takasoh, Fabrice Manns, Katsuhiko Kobayashi
Rok vydání: 2002
Předmět:
Zdroj: Scopus-Elsevier
ISSN: 2325-8179
2325-8160
DOI: 10.3928/1542-8877-20020501-08
Popis: * BACKGROUND AND OBJECTIVE: To show that sclerostomy, a glaucoma filtering surgery, can be performed using an Er: YAG laser. Scarring at the filtering site, a recurrent problem, may be reduced through proper positioning of the sclerostomy by using an intraocular endoscope. * MATERIALS AND METHODS: Ab interno fullthickness sclerostomies were performed on eye bank eyes with an Er: YAG laser through a custom made optical delivery system. The intraocular laser probe consisted of a low OH silica fiber inserted in a metallic tapered sheathing. A rigid intraocular endoscope based on grathent-index lenses allowed visualization of the filtration site. * RESULTS: A clear view of the anterior chamber angle was obtained through the endoscope, allowing for precise location of the sclerostomy. Full-thickness sclerostomies could then be performed at the desired location. Histologic sections showed thermal necrosis less than 50 um thick in tissue adjacent to the sclerostomy. * CONCLUSIONS: A sclerostomy performed with a combined procedure using an EnYAG laser and intraocular endoscopy increases the speed of the procedure. The use of a high-resolution intraocular endoscope may increase the success rate of ab interno laser glaucoma surgeries. [Ophthalmic Surg Lasers 2002;33:214-220]
Databáze: OpenAIRE