Laurie is also having cataract surgery in the near future . He is on warfarin which he needs to stop a week prior to surgery but we were told heparin will not be a problem . He was scheduled to have it done in December but had to postpone as he was in hospital with other issues but his eye specialist was doing it early in the morning same day as dialysis . The main hurdle we were facing was the fact Laurie only has one eye and you have to keep the cataract eye covered for 24 hours after surgery . We have spoken to quite a few people who have had it done and they all say it is great , almost instantaneous results . His cousin said she saw colours she didn't know existed . Laurie is looking forward to getting it done as he can barely see at all . Good luck , let us know how you go .