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Impressum
Transpupillary Thermotherapy in exudative age-related macular degeneration
Haas A., Feigl B., Weger M.
Department of Ophthalmology, Karl Franzens-University of Graz, Austria
Objective: To assess the effiectiveness of a single transpupillary
thermotherapy (TTT) in patients with exudative age-related macular degeneration
(AMD).
Patients and Methods: In a prospective pilot study 14 patients
with a mean age of 78 years (range: 70-92years) with subfoveal choroidal
neovascularisation (CNV) due to exudative age-related macular degeneration
were treated with a single TTT with diode lasere (810 nm). Seven patients
had a classic and 7an occult CNV. Laser beam size with a Volk Transequator
lens was 4.5 mm, power setting was 800 mW and the expostion time 1 minute.
Results: Twelve out of 14 patients could be followed for a period
of 18 months, the best corrected visual acuity ranged between 0.05 and
0.3 prior treatment and between 0.2 and hand movement after the follwow
up period.. Stabilisation of the visual acuity was achieved in two patients,
10 patients lost three or more Snellen lines. In none of the patients
a regression of the CNV could observed immediatly after TTT. Inactive
fibrotic scars developed in 6 patients at the end of the study.
Conclusion: Our results suggest that TTTaccording to our protcol
has no beneficial effect on the spontaneous course of the CNV in patients
with AMD.