I have been wearing gas permeable contact lenses for more than 20 years and they have been very comfortable. I usually wear them all day.
Recently, I had a new prescription and had a new pair of contact lenses fitted. They felt good for the first 2 months or so but my left eye started to have problem of focusing both near and far. I don't have the same problems with my glasses.
So, I went back to the optician to have the contact lenses checked but nothing was found.
I still have the same problem and don't want to wear the contact lenses much.
What is the problem? Should I have another eye test?
I'm afraid it's not possible to offer much advice on this sort of question in a forum such as this. You will definitely need another contact lens check and possibly another sight test. I don;t k now how old you are bit if you're in your 40s that could be complicating matters as your prescription can start to change, especially for reading.