Lenskart :

Offer: Flat Rs. 600 off on purchase of Eyeglasses of Rs. 1395.
Coupon Code: FLAT600
Landing page: http://www.lenskart.com/eyeglasses/promotions/frames-above-rs-1000.html

Offer: FLAT 60% off on all Sunglasses on purchase of Rs 499 & above.
Coupon Code: FLAT60
Landing page: http://www.lenskart.com/sunglasses/collections/aviators-wayfarers.html