Question

how will the lens be corrected with the help of spectacles

Answer 1

Glasses (redirect from Spectacles)
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

Answer 2

Actually, everyone believes that spectacles helps in correcting our eye sight problem.. But the real fact is NO... It doesn't help us.