Does this symptom suggest corneal edema or hypoxia?

Hey Joe- Some people just can not wear contacts, like me for example. You may have to resort to wearing glasses again? If you wore glasses, you could always use a magnifier to read with. That is what I do. I wear glasses, and my lenses are pretty thick and heavy also. And my vision is 20/200 also. Sometimes the shape of the cornea prevents a person from wearing contact lenses. I do not know much about edema or hypoxia. Like you, I have the almid valve in my eyes to decrease my eye preasure, and I take a couple glaucoma drops also. Perhaps you have an ulcer on your eye that could be causing the problem? Your best bet is to ask your doctor about it.