I have had eye irritation, light sensitivity, blurry eyes, etc. for almost a decade. It has changed my life -- not for the better. Couldn't read, watch TV, or live a normal life. I have seen many, many doctors -- some of the best in the US. I've tried every drop known to man, only to become hypersensitive to anything put into my eyes. I've used serum drops (no help), steroid drops (made things worse), PF drops (no help), specially compounded drops (little help), and so on. I have frustrated every doctor I have seen because none could figure out my problem. And, my frustration grew to the point that my wife didn't want to be around me. Most of the doctors wanted to do surgery, which I would not do without a definite diagnosis. And, of course, there was none. Within the last 6 months I was tested for allergies, and found that I was not a high reactor which eliminated that as a possible major issue. During the allergy testing period the allergist gave me some antibiotics, and prednisone, for what he thought was a sinus infection. Upon taking the meds my eyes got incredibly worse. This reminded me that about 25 years ago I was treated for a candida infection due to the many antibiotics I had taken over the years for sinus infections. I stopped the antibiotics and prednisone immediately, and asked the allergist to Rx me some nystatin. He could only Rx the oral suspension, which is loaded with sugar. But, I took it and within a day or so I had terrible diarrhea. This confirmed in my mind that I had a huge yeast build up. I then went to my primary care doctor and asked her to Rx me nystatin tablets which have no sugar (sugar increases yeast in the body). She Rxed a 3 month supply, with one refill. I am now just starting to take the refill and I can say that in total, and specifically my eyes, that I have not felt better in years. My eyes are about 80% better, and I think they will continue to improve as the fungus (very hard to kill) gets under control. It is important to treat fungus systemically because it resides throughout the body. Treating it locally, on the eyes, will not cure the fungus. In fact, it may make things worse because of the hypersensitivity of the eyes. FYI, there are some articles that link fungus to MGD -- not a lot, but it seems that there is a growing amount of evidence that fungus in the meibomian glands can be a major contributor to meibomian gland dysfunction -- and, all the terrible symptoms that many of us have lived with for years. For those of you who have struggled with this life changing problem for years, with fading hope for a solution, this may be something you want to explore. I would be glad to answer any questions at email@example.com.