$8 in Eye Care Coupons (Systane, Zaditor and Opti-Free) Posted by Harbor Master on 10 October 2017, 8:46 am Tweet The Coupons Expire 01/31/18 Unless other wise noted. The print limit is two of each. Click here to print a coupon for $3 off one SYSTANE Eye Drops 5mL or Larger Click here to print a coupon for $3 off Any One ZADITOR Product(Expires 30 days from print) Click here to print a coupon for $2 off One OPTI-FREE Solution 10oz or Larger