Most popular prescription lenses listed. Prescription lens prices quoted are for a pair of lenses with prescriptions up to 6.00 diopters cylinder, up to 2.00 diopter cylinder. Higher prescriptions will incur additional power charges. For other lens options such as specialty photochromic lenses, and more, see prescription information page. No prescription limitations. Estimated time frame for prescription: 7 to 10 working days. Note: Only polycarbonate or Trivex lenses can be inserted into these frames to meet the ANSI safety standard.