<strong>Walgreens: Online Coupon Code- 20% Off All Contact Lenses and Free Shipping. Enter the coupon code at checkout when ordering lenses online. Expires April 30, 2014.</strong> <strong>From the site:</strong> <strong>Code valid for one use per account thru April 30, 2014. Cannot be combined with any other offer. Offer does not apply toward contact lens solutions, lens accessories or taxes. Not available in PR. Order must be placed by 11:59 p.m. Central Time on April 30, 2014, to qualify. Timing will be determined by Walgreens server clock. Offer valid online only.</strong>