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  • Title: Laser photocoagulation for neovascular lesions nasal to the fovea. Results from clinical trials for lesions secondary to ocular histoplasmosis or idiopathic causes. Macular Photocoagulation Study Group.
    Journal: Arch Ophthalmol; 1995 Jan; 113(1):56-61. PubMed ID: 7529993.
    Abstract:
    OBJECTIVE: To determine whether laser photocoagulation of peripapillary choroidal neovascularization (CNV) or large neovascular lesions that are located nasal to the fovea is beneficial with respect to preservation of remaining vision--consistent with the overall study findings. PATIENTS AND INTERVENTIONS: A total of 113 eyes (112 patients) having either peripapillary CNV or CNV that was located nasal to the fovea and larger than 750 microns in longest diameter associated with either ocular histoplasmosis or idiopathic causes were identified from the eyes that were randomly assigned to either laser photocoagulation or observation only in clinical trials conducted by the Macular Photocoagulation Study Group. MAIN OUTCOME MEASURES: Visual acuity and change in visual acuity from baseline examination were compared for laser-treated and untreated eyes. RESULTS: At the 3-year examination, 11% (6/54) of the treated eyes vs 41% (21/51) of the untreated eyes had lost six or more lines of visual acuity (P < .001). Among eyes with peripapillary lesions, 14% (3/22) of the treated eyes vs 26% (6/23) of the untreated eyes had lost six or more lines of visual acuity at the 3-year examination (P = .29). Among eyes with nasal lesions, 9% (3/32) of the treated eyes vs 54% (15/28) of the untreated eyes had lost six or more lines of visual acuity at the 3-year examination (P < .001). CONCLUSION: Results from the subset of patients who had extrafoveal or juxtafoveal peripapillary CNV or CNV that was located nasal to the fovea were consistent with the beneficial results of treatment observed in the entire group of eyes that were studied by the Macular Photocoagulation Study Group.
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