Of course you are welcome to think whatever you wish. The facts are however that even the longest acting dilation drops (atropine 1%) which is not used for routine eye exams has worn off and been metabolized in 2-3 weeks. If you note the above posting was 8 HOURS after dilation. There are literally hundreds of millions of people that have been dilated and not a single one of them is the medication still around 2 years later. In very rare instances in abnormal eyes dilation can provoke an attack of angle closure glaucoma but that is a dramatic syndrome with severe pain, blurred vision, redness, etc.
The reason your eyes are not as good for near vision is almost assuredly you are two years older. Our near vision growns steadily worse as we age, it starts to catch up with us age 38-45. It's called 'presbyopa'. You can read about it on wikipedia. As you get older it will continue to get worse, that's why you see reading glasses in the drug store.