I wear glasses my vision is terrible. I am near-sighted.
That is exactly what they are used for, vision correction.
I wish I could see without them though, my vision is so bad I need my glasses to find my glasses if they fall off my night stand.
Oh my! You may need some safety glasses in case you fall providing protection for your eyes.
I used to have prescription safety glasses when I worked in the lab. I had to protect my eye from splash damage. 
you may need a strap for them as that would help them from falling off.
They don't end up falling off really. Do you know how they make glasses?
Glasses
Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears.
Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness.
Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as
extras" and once observed: "In my profession there is no such thing as bad publicity, so do make sure you print the correct address in your newspaper". Scottish writer Roddy Martine stumbled into Noyce's establishment in the early 1970s, though remained uninvolved: "I remember it being rather scruffy. There was a big television and girls sitting about on sofas with drunken men. Dora served glasses of dry white wine and asked the suddenly sober stag night revellers if they were sailors". Because of its notoriety,