Understanding Polycarbonate Lenses and the Importance of Anti-Scratch Coating
When it comes to eyewear, choosing the right material and coating is crucial for both comfort and protection. This article will delve into the benefits of polycarbonate lenses, spotlighting their impact resistance and the necessity of an anti-scratch coating for long-term durability.
Polycarbonate Lenses: Impact-Resistant but Not Scratch-Proof
Polycarbonate lenses have gained popularity for their remarkable impact resistance. These lenses are 10 times more impact-resistant than traditional plastic or glass lenses, making them a favorite choice for safety eyewear and sports glasses. However, it is essential to understand that while these lenses are highly resistant to breaking, they are not inherently scratch-proof. The surface of polycarbonate lenses can still be susceptible to scratches from everyday use, such as during cleaning or contact with other objects.
An anti-scratch coating can significantly enhance the durability of the lenses by providing an additional layer of protection against scratches. This layer helps to maintain the clarity and appearance of the lenses over time, ensuring that your vision remains clear and protected.
Comparing Polycarbonate to Other Materials
Polycarbonate materials have become standard in the eyewear industry due to several advantages over plastic. They can resist UV rays without any additional UV coating, making them a preferred choice for outdoor activities. Additionally, polycarbonate materials are unbreakable, lightweight, thinner, and offer minimal distortion. However, when it comes to durability, polycarbonate is prone to scratching. The absence of an anti-scratch coating on polycarbonate lenses means that they are just as susceptible to scratching as standard plastic lenses. Therefore, it is crucial to consider applying an anti-scratch coating to minimize the risk of scratches and maintain clarity.
Stock Lenses and Custom Lenses
The availability of an anti-scratch coating on polycarbonate lenses can vary depending on the type of lenses you are using. If your lenses are stock lenses, meaning they are pre-fabricated and maintain a specific power range, the anti-scratch coating is likely included. However, it is important to note that if your prescription is beyond the stock lens power range, or if you require bifocals or progressive lenses, a custom coating will need to be applied.
When the lenses are ground to fit your specific prescription, the coating is typically part of the manufacturing process. This factory coating offers the best scratch resistance, ensuring that your lenses remain protected for as long as possible. However, if the lenses are not ground and remain within the stock power range, the anti-scratch coating is included as part of the standard manufacturing process.
Conclusion
All polycarbonate lenses come with a scratch-resistant coating as a standard feature. This coating helps protect the lenses from everyday scratches, enhancing their durability and maintaining their clarity. While polycarbonate lenses are highly impact-resistant, they are not naturally scratch-resistant. An anti-scratch coating is essential for ensuring that your lenses remain in excellent condition for longer periods, providing you with the best possible vision and eye protection.
Note: There are no 'scratch-proof' lenses, but the anti-scratch coating significantly reduces the risk of scratches. Always choose a polycarbonate lens with an anti-scratch coating for optimal performance and longevity.