Because you're lenses are coming from the same place. Depending on the contract year, your lenses are probably coming from Essilor, which at that point you shou

Because you're lenses are coming from the same place. Depending on the contract year, your lenses are probably coming from Essilor, which at that point you should be probably be going to a private practice and getting better customer service and deals (in terms of warranties, and actually getting the most from the manufacturer). Though that really only extends to a two year period, if it is longer than than, it is pretty much considered a completely new order. Disclosure, I work for Essilor.