Here is How you can determine which Hi-Index lens is good for you:
1. CR-39 or Plastic lenses are your basic 1.50 Index lenses. These are your most commonly found lenses. We here at Framed By Tee Tee use these lenses for clients who have VERY MILD RX. These lenses can be tinted to achieve sunglass color match ( RX included). This lens is compatible with majority of RX, but may be subjected to heaviness, thickness, and quality of vision. **Must confirm RX vial email for ALL prescription lenses.
Clients that have prescriptions that are under -2.00 or +2.00 should be more than comfortable with the purchase of regular CR-39 (plastic) lenses.
Clients with prescriptions that are Higher than -2.00 or +2.00 are recommended to invest in a Hi-Index lens
**We recommend adding an AR Coating for those clients who are interested in purchasing these lenses as daily corrective vision. This enhances the quality and clarity of vision to improve your Framed By Tee Tee vision experience. **Applicable for tinted sunglasses only AFTER tint is completed. Refer to AR Coatings to read about our amazing Crizal lenses.
2. We recommend Polycarbonate lenses if your frame has rimless features. If you choose a frame that has your lenses exposed (given the confirmation of your prescription) THIS is YOUR lens. Polycarbonate lenses are impact resistant lenses. Commonly used in sport goggles, polycarbonate material its of a (mid index) thinner material. **This lens is NOT applicable for sunglass tinting. If You are looking to match a sunglass tint, please refer to our CR-39 lens options and email us for further information.
3. We Recommend Hi Index 1.67 lenses to clients who's RX is above 2.50 (-/+) and below 4.50 (-/+). This lens is a thinner, lighter lens that improves the overall optical quality.
**We also recommend adding AR Coating to this lens to have a complete polished look and enhance the vision quality during your Framed By Tee Tee experience.
4. Hi-Index 1.74 is the LIGHTEST and THINNEST of the lenses we have available. This Extreme high quality, light weight lens is the perfect match for those clients looking for the bells and whistles of lenses. This lens is equipped for clients who's RX is ABOVE 4.50(-/+).
Clients who's prescription tend to leave their lenses with extra thickness, heaviness and fairly unpleasant look This is YOUR lens.
** Hi-Index 1.74 MUST come with the purchase of an AR Coating. The polished, sleek, durable coating is a manufactured must when purchasing this amazing lens.