To investigate image preferences after photodynamic therapy (PDT). Prospective, cross-sectional study. Seventeen patients with neovascular age-related macular degeneration were tested by color vision, contrast sensiti...To investigate image preferences after photodynamic therapy (PDT). Prospective, cross-sectional study. Seventeen patients with neovascular age-related macular degeneration were tested by color vision, contrast sensitivity, and near visual acuity (VA)-with positive images and negative images before, 1 week after, and 3 months after PDT. Before PDT, 13 patients (76% ) preferred positive images; the difference was not significant (P < .04). One week after PDT, 16 patients (94% ) preferred negative images. The average near VA improved to 27 letters on positive images and to32 letters on negative images (P < .00001). Three months after PDT, near VA declined to 19 letters on positive images and to 26 letters on negative images (P < . 000001). Color vision and contrast sensitivity remained constant during all examinations. Although PDT may not alter the neurosensory retina, it may affect intraretinal function by changing image preference.展开更多
文摘To investigate image preferences after photodynamic therapy (PDT). Prospective, cross-sectional study. Seventeen patients with neovascular age-related macular degeneration were tested by color vision, contrast sensitivity, and near visual acuity (VA)-with positive images and negative images before, 1 week after, and 3 months after PDT. Before PDT, 13 patients (76% ) preferred positive images; the difference was not significant (P < .04). One week after PDT, 16 patients (94% ) preferred negative images. The average near VA improved to 27 letters on positive images and to32 letters on negative images (P < .00001). Three months after PDT, near VA declined to 19 letters on positive images and to 26 letters on negative images (P < . 000001). Color vision and contrast sensitivity remained constant during all examinations. Although PDT may not alter the neurosensory retina, it may affect intraretinal function by changing image preference.
