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Ansari-Shahrezaei, S; Binder, S; Stur, M.
The effect of laser unit on photodynamic therapy spot size.
Graefes Arch Clin Exp Ophthalmol. 2011; 249(1):11-14
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Autor/innen der Med Uni Graz:
Ansari Shahrezaei Siamak
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Abstract:
To determine the effect of the laser unit on photodynamic therapy (PDT) spot size. A calibrated Gullstrand-type model eye was used for this study. The axial length of the model eye was set to different values ranging from 22.2 to 27.0 mm, and the actual spot size from the laser console was recorded for treating a spot of 4 mm in the center of the artificial fundus using two different laser units (Coherent Opal laser; Coherent Inc, Santa Clara, California, USA and Zeiss Visulas laser; Carl Zeiss Meditec Inc, Dublin, California, USA) and two indirect contact laser lenses (Volk PDT laser lens and Volk Area Centralis lens; Volk Optical Inc, Mentor, Ohio, USA). From myopia to hyperopia, the total deviation from the intended spot size was -22.5% to -7.5% (Opal laser and PDT laser lens), and -17.5% to +2.5% (Visulas laser and PDT laser lens), -12.5% to +7.5% (Opal laser and Area Centralis lens), and -7.5% to +10% (Visulas laser and Area Centralis lens). The used laser unit has a significant effect on PDT spot size in this model. These findings may be important for optimizing PDT of choroidal neovascular lesions.
Find related publications in this database (using NLM MeSH Indexing)
Choroidal Neovascularization - drug therapy
Humans -
Laser Therapy -
Macular Degeneration - drug therapy
Models, Biological -
Photochemotherapy -
Photosensitizing Agents - therapeutic use
Porphyrins - therapeutic use

Find related publications in this database (Keywords)
Photodynamic therapy
Laser
Age-related macular degeneration
Choroidal neovascularization
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