These data demonstrate that urologists who practice in Madrid have a good theoretical knowledge of IFIS. As we expected, tamsulosin is by far the preferred drug for treating BPH. The degree of knowledge was similar in all participating hospitals, and we did not find a correlation with any of the studied variables. Not surprisingly, most urologists were ignorant of the morphologic changes induced by the drug and thought that IFIS could be reversed easily by stopping tamsulosin days before surgery. Morepublications about this topic inurology journals may increase the level of knowledgeof certain aspects of IFIS amongmembers of the urology community. Better knowledge of this syndromeby the urology community should, in the intermediate term, result in a reduction in the prevalence and severity of the syndrome and an increase in the safety of cataract surgery.