i have near constant eye strain as well and it can make my vision seem blurry. incidentally one of my biggest symptoms at the moment that i focus on is how sore my eyes are all the time. but the eyes have muscles in them as well, which are prone to tension just like the rest of our muscles are. chronic anxiety leads to chronic tension in all parts of the body and the eyes are no exception to this.
two clear eye exams is a very good indicator that your eyes are healthy. what's also great about eye exams is that they can catch a ton of problems in the brain, not just in the eyes. having not just one but two healthy eye readings is very positive reinforcement that there's nothing sinister going on in your eyes or in your brain. try to remember that whenever you feel nervous about your eye symptoms; i have to remind myself of the same thing every day. :)