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Mayo Clinic detective work shows possible side effect in macular degeneration drug
Date:10/24/2011

ho did not receive the injection. Pooling the two studies, which followed the treatment of 1,125 eyes, Dr. Bakri was able to perform a more robust evaluation of IOP changes. Some patients received Lucentis and others unknowingly received "sham" or mimicked injections, or a laser treatment called verteporfin photodynamic therapy (PDT), which did not involve injection.

Dr. Bakri found what she suspected: a subset of patients had increased IOP.

"We still don't know if it goes up because of the drug or the pressure of the repeated monthly injections, or both," she says. The take-home finding: intraocular pressure should be monitored in eyes receiving ranibizumab.

"A greater proportion of eyes in the ranibizumab groups had IOP increases regardless of the presence or absence of pre-existing risk factors, such as history of glaucoma, suspicion of glaucoma, ocular hypertension or use of a glaucoma medication," Dr. Bakri says.

A small portion, 8 percent, of all eyes across treatment groups received glaucoma medications in the study. Importantly, none of the patients needed glaucoma surgery.

"Our analysis was surprising because the increase was so prevalent and highly statistically significant," Dr. Bakri says. "Lucentis is an excellent drug that works very well, but if we use a drug, we gain long-term experience, and that's where side effects start showing up.


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Contact: Robert Nellis
newsbureau@mayo.edu
507-284-5005
Mayo Clinic
Source:Eurekalert

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