My first glasses were reading glasses only. When reading and looking up I had difficulty with trying not to look thru the glasses. After that I got progressive transition lenses in the same frame.
As soon as I put them on I thought oh no, these are not for me. Everything that was supposed to be straight looked crooked.
Dr. told me to keep them on all the time and don't take them off until I have to like going to bed or in the shower and I will get used to them. After a few weeks the crooked lines became straight as the brain adjusted.
The transition lenses are good, as this way I do not need sunglasses. These lenses become dark when exposed to harsh light and light again when inside.
I have these lenses because I had an accident with my right eye, following that I can hardly see anything with that eye and the pupil of my right eye is very big now letting in more light.
Most people over the age of forty need glasses as the muscles attached to the lenses start to get tired and are unable to pull the lens into the right shape quickly or in other words get the lens to focus properly. Something we have accept like wrinkles, and gray hair.
Not wearing glasses and needing them can lead to headaches or car-crashes. Bifocals tend to be worn by elderly people and wearing progessives make the wearer look youthful.