as a piece of glass or other transparent material, used to converge or diverge transmitted light, to form optical images, as for magnification or correcting defects of vision
Depends on the type of defect of the eye
No.
Well, so that the inside doesn't get ruined, but also so that the zoom can work properly.
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
obviously no bcz maybe u r having the pain or redness due the lense may be they r nt clean...
No you do not. I started with daily disposables when I was 11years old.