Our 1.50 index lenses are made from CR39, a lightweight and resilient optical polymer that is almost as clear as glass but even lighter. The CR39 provides stellar optical quality and are free on most frames. They can be easily upgraded to include scratch-resistant, UV and anti-glare coating. We recommend this option for people with low prescriptions.
Our 1.57 index lenses are a polymer lens that provides a thinner lens for stronger prescriptions than standard index optical lenses.
Our 1.59 index lenses are made by Polycarbonate which was introduced in the early 1980s in response to a demand for lightweight, impact-resistant lenses
Our 1.60/1.67/1.74 lenses are made by MR-series, which is premium, clear, strong, thin, with visual appeal and integrity.
Below is the detail parameter of lenses:
We use free-form lenses (also called digital high-definition lenses) that are leading the industry standard. Our lenses are optimized with computer-controlled surfacing equipment that is much more precise than conventional tools.