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Br J Ophthalmol 2002;86:1194 doi:10.1136/bjo.86.10.1194
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TTT for occult CNV: check the power!

  1. A J Mueller,
  2. M Ulbig,
  3. A Kampik
  1. Eye Clinic of the University, Mathildenstrasse 8, 80336 Munich, Germany
  1. Correspondence to: Dr Arthur J Mueller; amueller{at}ak-i.med.uni-muenchen.de

    Transpupillary thermotherapy (TTT) was originally introduced for the treatment of small choroidal melanoma.1 Although the precise mechanism of action for this treatment is unknown yet, the reported data appear to be beneficial compared to the natural course of the disease.

    Currently, the following treatment parameters are recommended to treat occult choroidal neovascularisation (CNV) with TTT: one exposure, 60 second exposure time, 800 mW power for the 3 mm spot, 530 mW for the 2 mm spot, and 320 mW for the 1.2 mm spot. With these parameters applied via the Goldmann fundus lens the …

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