What are progessive lens?

1 Answer
chandramohanPanakkal
Jan 24, 2017

normal spectacle lenses will have two parts one for distance vision and other for close up vision.

Explanation:

progressive lens will be only one lens slowly changing from distance to close up0 Same lens changing FL graduallyenter image source here .
picture allaboutvision.com.

Related questions
See all questions in Thin Lenses
Impact of this question
1587 views around the world
You can reuse this answer
Creative Commons License