Aktuelle Tagungsinformationen
News and Updates
Anmeldung zur Tagung
Registration
Hotelbuchung
Hotel Registration
Grußwort
Welcome address
Beteiligte Gesellschaften
Societies involved
Eröffnung des Kongresses
Opening Ceremony
Preise
Awards
Wissenschaftliches Programm
Scientific program
Posterpräsentationen
Poster Presentation
Kurse
Courses
Begleitende Veranstaltungen
Collateral Events
Rahmenprogramm
Social program
Jubiläumsparty
Jubilee Party
DOG Information
DOG Information
Allgemeine Informationen
General Information
Autorenindex
Index of Authors
Ausstellerliste
Exhibitors
Sponsoren
Sponsors
Teilnahmegebühren
Registration fees
Impressum
DOG Homepage
Which Laser Power would be Necessary for Photodynamic therapy (PDT) or Transpupillary Thermo-therapy (TTT) in Patients with Cataract?
1Hammer M., 1Schweitzer D., 2Seewald J., 2Königsdörffer E., 3Pawlowski D., 2Strobel J.,
1Friedrich-Schiller-Universität Jena, Klinik für Augenheilkunde, Experimentelle Ophthalmologie (Jena)
2Friedrich-Schiller-Universität Jena, Klinik für Augenheilkunde (Jena)
3CCS Pawlowski GmbH (Jena)
Purpose: To determine the factor, by which the laser power in PDT or TTT has to be increased to compensate for scattering losses in cataract lenses.
Method: The macular fundus reflection was measured in 20 patients (mean age: 71.1±6.7 years) at PDT- and TTT-specific wavelengths (667 nm, 689 nm, and 810 nm) before and after cataract extraction and intra-ocular lens implantation. The laser power enhancement, necessary in case of cataract, was calculated from the ratio of the pre- and postoperative measurements.
Results: Compared to the laser dosage for eyes with clear media, an enhancement of the laser power by 1.25 would be necessary in order to apply the same dose of radiation to the maculae of the cataract eyes in this investigation. However, the inter-individual differences were large (SD=0.25).