it seems for me that the more I use my reading glasses, the more I NEED to use them, even for things such as cutting up veggies...its just easier with the readers.....
also, I have a theory that perhaps our eyes lose their "accomodation" ability the more our society wears sunglasses year round....seems that we might be weakening our ability of our eyes to adjust to differant light settings.......can that be possible?
I've wondered if frequent-sunglass-wearing, (especially among, say, pre-teens) has led to an increase in depression. (I'm not saying sunglass-wearing doesn't have positive effects.)
Please see my post #50 regarding focusing changes in the eye
Also, in regards to wearing sunglasses it's more that you get used to not having to deal with the bright light and become a little more sensitive to it over time. Just going without sunglasses a few weeks and we'll have the same sensitivity to it as we did before we started getting used to the sunglasses. Early cataract formation in the 50's (which happens to most of us) is one reason why night driving becomes more difficult and sunlight bothers us more as we age.