This issue has been going on for a while now, and I'm not sure what to do. About a year ago, my eye doctor upped me from 3.75 in both eyes to 4.0 in both eyes. Not a huge difference, but definitely noticeable, especially at night. Well, a few months ago, I was going hiking and I thought that I had gotten something stuck in my left eye. It was itchy and VERY uncomfortable. I rinsed out the lens and put it back in, but the feeling didn't go away. It sort of felt like the lens had a large tear in it - probably something everyone here can relate to. Anyway, the next day, I put in a brand new lens, also 4.0. The first and second day were fine, and on the 3rd day, the feeling came back. I disposed of THAT lens, opened a brand new box of 4.0s, and put one in my eye. The same thing happened. Meanwhile, my right eye which had a 4.0 from the very same box was completely fine. I decided that even though it was unlikely to solve the issue, I would try a 3.75 of the same brand that I still had leftover, and voila, it didn't both my left eye whatsoever, even after 2 weeks. Bear in mind that all of these lenses are Air Optix Aqua. I used the 3.75s for about two weeks, thinking that maybe I had a mild corneal abrasion and that for some reason the stronger prescription was bothering it. After the two weeks, I put a brand new 4.0 in my left eye, and the discomfort came back within a couple of days again!

I'm not sure how this makes sense. For one, how could the strength of the prescription be affecting my eye, and 2, why is it only my LEFT eye? Again, same brand, 3.75 is fine, 4.0 causes major discomfort. I've been wearing contacts for 15 years and have never experienced an issue like this that couldn't be solved by wearing glasses for a few weeks.

I would greatly appreciate any input that anyone might have.

Thank you!