Where do you live? <a href=" http://www.vhig.nl/index.php?revatio-20-mg-tablet.pptx#glitter ">revatio renal failure</a> Dr. James "Chris" Fleming of the University of Tennessee Health Science Center, who has studied patients with haemolacria, told The Tennessean that the condition is so difficult to diagnose because doing invasive procedures in the tear duct area is risky.