Depends on the type of defect of the eye
No.
Extremely critical.
to magnify it
A lens is a device that changes the direction of light.
It is possible to do so - you will need to contact your optician.
The objective lenses are the optical element that gathers light from the 'object' being observed and they focus the light rays to produce a real image.
They enlarge and put into focus the object on the slide.
replace the natural lens that is removed during cataract surgery
No you do not. I started with daily disposables when I was 11years old.
A pair of spectacles has an individual lense, one for each eye.
replace the natural lens that is removed during cataract surgery