Ways causes some immediate, permanent central vision loss (a central blind spot). And laser treatment does not always prevent future growth of abnormal blood vessels. Photodynamic therapy may be better able to target the blood vessels without damaging the nerve cells in the retina and macula. How well it works pdt can lower the risk of severe vision loss by reducing the growth of and leakage from abnormal blood vessels under the retina. 2 how well the treatment works depends on where and how the abnormal blood vessels are growing beneath the retina. For some types of wet amd, the treatment has no detectable benefit. The effect of pdt in slowing the progress of amd is often temporary, and the abnormal blood vessels begin leaking again after about 3 months. Most people need multiple treatments to get the full benefits of the therapy. Risks a severe loss in visual clarity occurs in 1 to 4 out of large integer people treated with pdt. cheap viagra india In some cases, vision partially recovers. viagra use men without ed 3 other side effects that may occur with pdt include: temporary visual disturbances (abnormal vision, decreased vision, defects in the visual field). Pain, swelling, bleeding, or inflammation at the site where the verteporfin medicine is injected. Some people also experience low back pain related to the injection of the medicine. Photosensitivity reactions (such as sunburn). What to think about photodynamic therapy (pdt) has been shown to be effective for only certain types of wet amd. The treatment may not work for you. watermelon and pomegranate can act as a natural viagra The effectiveness and long-term consequences of pdt are still being studied. The verteporfin (visudyne) dye is an expensive medicine, adding to the overall cost of the treatment. online viagra without prescription But you must balance this cost against the potential benefit it provides in slowing or reducing the loss of vision from amd. buy generic viagra online Complete the special treatment information form (pdf) (what is a pdf document? ) to help you understand this treatment. References citations rosenfeld pj, et al. (2009). Age-related macular degeneration. viagra online without prescription In m yanoff et al. , eds. watermelon and pomegranate can act as a natural viagra , ophthalmology, 3rd ed. , pp. 658–673. buy viagra without prescription Edinburgh: mosby elsevier. Arnold j, heriot w (2007). Amd, search date march 2006. Online version of bmj clinical evidence : treatment of age-related macular degeneration with photodynamic therapy (tap) study group (2001). Photodynamic therapy of subfoveal choroidal neovascularization in age-related macular degeneration with verteporfin: two-year results of two randomized clinical trials—tap report 2. Archives of ophthalmology, 119(2): 198–207. Credits by healthwise staff primary medical reviewer e. Gregory thompson, md - internal medicine specialist medical reviewer steven t. Charles, md - ophthalmology last revised july 20, 2011 top of page last revised: july 20, 2011 author: healthwise staff medical review: e. Gregory thompson, md - internal medicine & steven t. Charles, md - ophthalmology rosenfeld pj, et al. (2009). canada generic viagra Age-related macular degeneration. In m yanoff. what do viagra pills do