Both polycarbonate and Trivex lenses are thinner and lighter than regular plastic lenses. They also offer 100 percent protection from the sun’s harmful UV light and are up to 10 times more impact-resistant than plastic or glass lenses.

This combination of lightweight comfort, UV protection and impact resistance also makes these lenses an excellent choice for children’s glasses and safety glasses.

Polycarbonate Lenses

polycarbonate lenses have become the standard for safety glasses, sports goggles and children’s eyewear. Because they are less likely to fracture than regular plastic lenses, polycarbonate lenses also are a good choice for rimless eyewear designs where the lenses are attached to the frame components with drill mountings.

• Light weight (Up to 20% lighter and thinner than plastic CR-39)
• Impact-resistant lenses. (up to 10 times more impact-resistant )
• UV Protection (100% UV Protection So if you chose Polycarbonate Lenses, don’t pay for UV coating )

Trivex Lenses

• Thickness. Polycarbonate has a higher index of refraction than Trivex (1.58 vs. 1.53), so polycarbonate lenses are about 10 percent thinner than Trivex lenses.
• Weight. Trivex has a lower specific gravity than polycarbonate, making Trivex lenses about 10 percent lighter than polycarbonate lenses.
• Optical clarity (central). Trivex lenses have less internal stress and may produce sharper central vision than polycarbonate lenses.
• Optical clarity (peripheral). Trivex lenses have a higher Abbe value and may produce sharper peripheral vision with less chromatic aberration than polycarbonate lenses.
• Impact resistance. Polycarbonate and Trivex lenses have comparable impact resistance.
• UV protection. Polycarbonate and Trivex lenses both block 100 percent of the sun’s UV rays without the need for special UV-blocking lens coatings.
• Availability. Polycarbonate lenses are available in a wider variety of lens designs ( progressive lenses and other multifocals) than Trivex lenses.