Mineral lenses (Glass Lenses)

Mineral lenses may be very resistant to scratching, but they are quite heavy and prone to breakage than comparable plastics (organics).It’s not recommended for children or those who are active in sports.

Organic Lenses

Low index Plastic Lenses

They are the most common optical polymer in ophthalmic field. They are standard plastic lenses also known as CR 39®, 1.50 index, suitable for low ametropies. (low power prescriptions).

Mid index Plastic Lenses

Mid-Index lenses range in material index from 1.53 to 1.56. This material is thinner and lighter than standard plastic lenses. Ask your eye care professional which material is suitable for you based on your individual Rx prescription and your frame style selection.

High-Index Plastic Lenses

High-Index lenses have a material index of 1.60. These high quality lenses are made from MR-8, which is a high resistant material deal for drill mount frames. High index lenses are thinner than low and mid-index lenses.

Ultra High-Index Plastic Lenses

These lenses’ indexes range from 1.67 to 1.74, which is the highest index currently available. Ultra High-Index lenses are the thinnest and lightest materials available in the market for higher power prescriptions. Ask your eye care professional what material will be best for you, based on your individual prescription and the frame style you select. Remember, the higher the material index the thinner the lens.