Ethan Clarke
Plastic and Trivex lenses are two of the most common lens materials for eyeglasses. Plastic lenses, also known as CR-39 lenses, were introduced in the 1940s as a cheaper and lighter alternative to glass lenses. Trivex lenses, on the other hand, were introduced in 2001 and are known for their impact resistance and UV protection. While Trivex is considered a type of plastic, there are some key differences between the two materials when it comes to scratch resistance.
| Characteristics | Values |
|---|---|
| Scratch resistance | Trivex is more scratch-resistant than plastic, but Trivex still requires a scratch-resistant coating to prevent scratches. |
| Impact resistance | Trivex is impact-resistant, but polycarbonate plastic is more impact-resistant. |
| Weight | Trivex is the lightest lens material available. Polycarbonate plastic is thinner and lighter than standard plastic lenses. |
| UV protection | Trivex and polycarbonate plastic block 100% of UV rays. |
| Cost | Trivex lenses are generally more expensive than polycarbonate lenses. |
| Optical clarity | Trivex has better optical clarity than polycarbonate plastic, providing clearer and sharper vision. |
| Durability | Trivex is durable and a good choice for rimless frames, children's eyewear, and anyone who wants safe and comfortable glasses. |
| Abbe value | Trivex has a higher Abbe value than polycarbonate plastic, indicating better optical clarity and less chromatic aberration. |
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What You'll Learn
Trivex lenses are more lightweight than polycarbonate lenses
Trivex lenses are crafted from a urethane-based monomer and are created using a slow moulding process that is carefully baked. This results in Trivex lenses having a higher Abbe value than polycarbonate lenses, making them optically superior with better optical clarity and less chromatic aberration.
Trivex lenses are also lighter than polycarbonate lenses, making them more comfortable to wear for extended periods. This is particularly beneficial for people with stronger prescriptions, as heavier lenses can cause discomfort and strain. The weight difference is negligible in practical scenarios, but Trivex lenses have a lower specific gravity, making them the lightest lens material available today.
In addition to being lightweight, Trivex lenses are also durable. They are impact-resistant, with tensile strength that makes them highly resistant to cracking. They also offer excellent UV protection, blocking out 100% of UV rays.
While Trivex lenses are lightweight, durable, and provide excellent optical clarity, they are generally more expensive than polycarbonate lenses. However, the price difference may be worth it for those who prioritise these features. Ultimately, the choice between the two materials will depend on individual preferences and specific needs.
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Trivex lenses have better optical clarity
The high Abbe value of Trivex lenses means they manage light dispersal better than other materials, including regular plastic lenses. Trivex lenses also have a light transmittance of 91.4%highest level of all lens materials for glasses. This high light transmittance directly affects the clarity, brightness, and crispness of vision when wearing this lens material.
The flatter lens curves of Trivex lenses also contribute to their optical clarity. These flatter curves reduce distortion and increase the peripheral view, providing wearers with a wider field of vision. Trivex lenses are also impact-resistant, rarely scratching, and able to withstand temperature extremes without cracking or warping. They are also lightweight, thin, and provide 100% UV protection.
However, Trivex lenses can be more expensive than regular plastic lenses and may not be covered by vision insurance. They are also not available at all optical retailers, so interested consumers may need to research local retailers or order their glasses online. While Trivex lenses offer excellent optical clarity, they may not be the most cost-effective or easily accessible option for some individuals.
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Trivex lenses are more impact-resistant
Trivex lenses are a great option for those who lead an active lifestyle or have children who need glasses. Trivex lenses are made from a sturdy, high-quality, and clear plastic that was originally developed for military purposes. They are lightweight, impact-resistant, and offer protection from harmful UV rays.
Trivex lenses are a good choice for those who want durable glasses. They are resistant to common issues like being dropped or scratched, and they can also withstand unusual problems like exposure to certain chemicals. For example, Trivex lenses can resist acetone, a common chemical found in nail polish remover, which few plastics can withstand. This makes Trivex lenses a good option for those who want glasses that can withstand more than just everyday wear and tear.
The impact resistance of Trivex lenses also makes them a safer option for those who need glasses. In addition to being less likely to break, Trivex lenses also resist cracking, which is important for those who want rimless frames. Trivex lenses exceed the FDA minimum impact standard for street/dress eyewear by 60 times, providing peace of mind for those who are concerned about eye safety.
While Trivex lenses offer excellent impact resistance, they may not be the best option for those who are looking for the thinnest lenses possible. High-index lenses are the thinnest option available, and while Trivex lenses are lightweight, they may not provide the same level of thinness. Additionally, Trivex lenses can be more expensive than other options, so it is important to consider your budget when deciding if Trivex lenses are the right choice for you.
Overall, Trivex lenses offer superior impact resistance, making them a great choice for those who want durable, safe, and comfortable glasses. With their lightweight design and protection from UV rays, Trivex lenses are an excellent investment for those who want the best combination of safety, comfort, and optical performance.
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Polycarbonate lenses are more scratch-resistant with a coating
Polycarbonate lenses are made of a strong yet lightweight plastic. They are impact-resistant, thin, and provide UV protection. However, they are prone to scratches, and a scratch-resistant coating is often recommended to help the lenses last longer. Polycarbonate lenses are also more expensive than plastic lenses.
Plastic lenses, also known as CR-39 ("Columbia Resin 39"), have been widely used since the 1970s and are still a popular choice for prescription glasses. They are lightweight, durable, shatter-resistant, and scratch-resistant. Plastic lenses are also more affordable than polycarbonate lenses. However, they offer only partial UV protection, and a UV coating is usually recommended for outdoor use.
Trivex lenses, on the other hand, are known for their scratch resistance and durability. They are also lightweight, impact-resistant, and block 100% of harmful UV rays. Trivex lenses are generally more expensive than both plastic and polycarbonate lenses.
While Trivex lenses are renowned for their scratch resistance, some users have reported experiencing more scratches with Trivex lenses than with other types of lenses. It is important to note that the scratch resistance of lenses can be enhanced by applying coatings. Polycarbonate lenses, in particular, can benefit from scratch-resistant coatings to improve their durability.
Coatings play a crucial role in enhancing the scratch resistance of lenses. Different types and levels of coatings are available, offering varying degrees of protection. When choosing between Trivex and polycarbonate lenses, it is essential to consider the specific coatings applied to each type of lens. While Trivex lenses inherently possess good scratch resistance, polycarbonate lenses can be treated with scratch-resistant coatings to make them more resilient to scratches.
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Polycarbonate lenses are more affordable
Polycarbonate lenses are made from a soft material, which makes them highly impact-resistant. This same quality, however, also means that they are more prone to scratches. To prevent this, polycarbonate lenses often have scratch-resistant coatings, which can make the surface almost as hard as glass. These coatings are crucial in enhancing the impact resistance of polycarbonate lenses.
Trivex lenses, on the other hand, are crafted using a slower, more meticulous molding process. This results in sharper optics, providing clearer and sharper vision compared to polycarbonate lenses. Trivex has a higher Abbe value, which means it offers better optical clarity and reduced chromatic aberration. Additionally, Trivex lenses are lighter in weight, making them more comfortable for extended wear, especially for those with stronger prescriptions.
While Trivex lenses are generally more expensive, polycarbonate lenses are a more economical option, widely available, and suitable for most eyeglass needs. Polycarbonate lenses are a good choice for those seeking impact resistance and UV protection without breaking the bank. However, it's important to consider individual preferences, as Trivex may be worth the extra cost for those who prioritize optical clarity, scratch resistance, and lightweight comfort.
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Frequently asked questions
Yes, plastic scratches more easily than Trivex. Plastic lenses are thicker and heavier than Trivex lenses. Trivex lenses are lightweight, durable, and scratch-resistant.
Trivex lenses are lighter than polycarbonate lenses, making them more comfortable to wear for extended periods. They also have better optical clarity, providing clearer and sharper vision. Trivex lenses are also impact-resistant and provide inherent UV protection.
Trivex lenses are generally more expensive than polycarbonate lenses. They also have a lower refractive index, making them slightly thicker than polycarbonate lenses.
