Glasses USA cuts 30% off sitewide, including lens upgrades and clearance styles, via coupon code "ENTIRE30" during its End of Summer Sale. Plus, all orders receive free shipping. Some exclusions apply, including contact lenses and "Premium" tagged brands. Deal ends September 21.

Note: Coupon code "frames50fs" takes 50% off just frames and may yield a stronger discount on select eyewear purchased without upgraded lenses.

See all Glasses USA Coupons.