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  • Title: Large-spot size transpupillary thermotherapy for the treatment of occult choroidal neovascularization associated with age-related macular degeneration.
    Author: Thach AB, Sipperley JO, Dugel PU, Sneed SR, Park DW, Cornelius J.
    Journal: Arch Ophthalmol; 2003 Jun; 121(6):817-20. PubMed ID: 12796252.
    Abstract:
    OBJECTIVE: To describe the outcome of patients with occult choroidal neovascularization in age-related macular degeneration treated with transpupillary thermotherapy. DESIGN: Prospective, nonrandomized, nonmasked case series. METHODS: All patients with age-related macular degeneration with a predominantly occult choroidal neovascular membrane and an initial visual acuity of 20/400 or better were offered treatment using transpupillary thermotherapy. The treatment consisted of using a diode laser, a spot size of about 3000 to 6000 micro m delivered over 60 seconds, and a power of 600 to 1000 mW. MAIN OUTCOME MEASURES: A stable, improved, or worsened visual acuity and the need for additional treatment. RESULTS: Sixty-nine patients were treated. All patients have been followed up for at least 6 months. At the 6-, 9-, and 12-month follow-up visits, 71% of patients have stable or improved visual acuity and 29% have lost 2 or more lines of visual acuity on the Snellen letter chart. CONCLUSION: Large-spot size transpupillary thermotherapy is effective in stabilizing the visual acuity in those patients who have occult choroidal neovascularization due to age-related macular degeneration.
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