Question

doctor advised to use by focal lens
spectable why​

Answer 1

Explanation:

bcx he must have defects like myopia hypermetropia presbyopia astigmatism.....thanku 7006573706 my what's app no for any information...........

Answer 2

Explanation:

because it helps the person who has both myopia and hypermetropia which called presbyopia.

hope it will help you!!