Flomax Linked to Cataract Surgery Risks
Men Who Take Flomax Shortly After Cataract Surgery More Likely to Have Serious Complications, Study Says
May 19, 2009 -- Men who take the drug Flomax within two weeks of cataract surgery are at risk of serious eye complications, including a detached retina or lost lens, according to a new study published in the Journal of the American Medical Association.
Flomax is a commonly prescribed medication used to treat urination difficulties brought on by an enlarged prostate, or benign prostatic hyperplasia (BPH). The condition affects nearly three out of four men by age 70, according to background information in the journal report.
Flomax is a type of medicine called an alpha-blocker, which relieves BPH symptoms by targeting receptors that relax smooth muscles along the urinary tract. However, the same receptors are located in the smooth muscle of the iris in the eye. Some small studies have suggested that Flomax may make a man more likely to develop intraoperative floppy iris syndrome (IFIS), which increases the risk of cataract surgery-related complications. But data from larger studies are lacking.
For the current study, Chaim M. Bell, MD, PhD, of St. Michael's Hospital in Toronto, Canada, and colleagues analyzed medical records of 96,128 men 66 and older who had cataract surgery between 2002 and 2007. They determined which men took Flomax or a similar drug at the time of cataract surgery and who experienced a cataract surgery complication.
They grouped the men into two categories:
Recent exposure group: Men who had taken Flomax or other alpha-blocker within 14 days of cataract surgery. Most men -- nearly 11,000 -- fell into this group.
Previous exposure group: Men who had a history of taking Flomax or another alpha-blocker but not in the 14 days before cataract surgery.
The researchers discovered that 284 men (0.3%) had a complication in the 14 days following cataract surgery. Those who took Flomax two weeks before the procedure were 2.3 times more likely to have a serious complication.
Among the complications:
- 175 men had a procedure for a lost lens or lens fragment
- 35 men had a retinal detachment
- 26 men had both
- 100 men had suspected inflammation within or around the eye, a condition called endophthalmitis