For months now I have experienced lightheadedness on a daily basis for most of each day. Initially my Primary Care physician (PC) felt it was high BP and we have used several r/x to control it. Lisinopril seems to be doing quite well but my lightheadedness has not gone away. Some days it is very difficult to function and all I want to do it sit down. On 6 occasions over the past two months I have had partial ((around the outside edge) blurred vision of one eye. It only lasts for about a minute but is quite scarey. I need this addressed because functioning on a daily basis is difficult and this is frightening. Any help is appreciated.