Glasses USA takes 50% off most items sitewide via coupon code "HOT50". Even better, that same coupon code yields free shipping. That's tied with last week's mention as the best percent-off discount we've seen from Glasses USA. Eligible items include single-vision lenses and frames from brands like Calvin Klein, Nautica, Nike, and Ray-Ban. Some exclusions apply. Deal ends August 1.

See all Glasses USA Coupons.