What can I do to repair the discolored sunglasses lens?

[Philo]

My Zara sunglasses are 15 years old and they started to discolor recently. I can see fine through them,but when looking at the lens from outside,there are some brown splotches.Can anyone help?

[Philomath]

15 years is too long for a pair of sunglasses, why not change for another pair? The longer you use the sunglasses, the less effective it can precent the bright sunlight and glare. Choose the most fashionable and economical sunglasses at http://www.cheapglasses123.com/prescription_sunglasses

[Philpot]

Take your sunglasses back to the optical store where you bought your sunglasses and tell them what conditions your sunglasses are. Then they will deal with the problem.

[Phlox]

I think you can consider to repain them or it is time to get a new pair.