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JOURNAL ARTICLE
REVIEW
Association between tamsulosin and intraoperative "floppy-iris" syndrome.
Israel Medical Association Journal : IMAJ 2009 January
Intraoperative "floppy-iris" syndrome is a novel entity that was initially described in 2005 by Chang and Campbell who encountered it during cataract surgery. The manifestations include a triad of the following intraoperative findings: (a) flaccid iris stroma leading to fluttering and bellowing of the iris, (b) prolapse of the iris through the surgical incisions, and (c) progressive pupil constriction. IFIS has been associated with increased surgical difficulty and, as a result, with increased morbidity including retinal detachment and loss of vision. Since the initial publication of IFIS in 2005, there have been several reports of a possible association between the use of tamsulosin for symptomatic prostate hyperplasia and IFIS. Consequently, in 2005 the U.S. Food and Drug Administration issued an alert recommending ophthalmic examination prior to treatment with tamsulosin. In this review we present evidence of the association between tamsulosin and IFIS. We conducted a Medline search using the key words tamsulosin or alpha-blockers and retrieved English written reports and data on the prevalence of treatment with alpha-blockers in general and specifically tamsulosin among patients undergoing cataract surgery, the prevalence of IFIS among treated versus non-treated patients, and the resulting surgical complications. Of the 19 publications on this topic only 7 were patient series providing data on IFIS and treatment with tamsulosin. The prevalence of men receiving tamsulosin for BPH among the patients operated for cataract was 1-3%, the occurrence of IFIS was reported in 2-3% of the patients, and 57-100% of the patients receiving tamsulosin had at least one manifestation of IFIS. The occurrence of IFIS among men receiving other alpha-blockers or in non-treated patients was rare. An association between preoperative treatment with tamsulosin and IFIS is probable. This observation warrants further research to establish causality. Meanwhile, it seems prudent to perform an ophthalmic examination prior to prescribing tamsulosin.
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