Lenskart Exchange Offer: Exchange your old eyeglasses and sunglasses (Lenskart or otherwise) and get up to Rs 500 towards the purchase of new glasses at Lenskart. Use your exchange value within 15 days of generation on the Lenskart website/app or at any Lenskart store. The exchange value can be combined with the Buy 1 Get 1 (BOGO) offer. Buy glasses under Lenskart Buy 1 get 1 offer, glasses starting at Rs.1700. Glasses Badlo Vibe Badlo.