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What is the length of time an Avastin® injection is effective (or, is working)? Approximately what is the interval between shots?
Avastin turns off a signal usually generated in the back of the eye by lack of oxygen, which causes abnormal vessels to grow and leads to leakage and visual disturbance. With Avastin in place, these vessels can recede and extra fluid can be absorbed. The effect is rapid but the Avastin does not treat the primary oxygen lack so the signaling can restart. Depending upon the depth of the problem you may need injections every six weeks to eight weeks until it stabilizes. Discuss your chances with your retinal surgeon.
Answered by: Richard Bensinger, MD
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Answered: May 01, 2013
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