Materials Used in Blue Light Blocking Reading Glasses
Blue light blocking reading glasses have become increasingly popular due to their ability to reduce eye strain caused by prolonged exposure to digital screens. The material used in these glasses plays a key role in their effectiveness, comfort, and durability.
The lenses of blue light blocking reading glasses are typically made from high-quality optical-grade plastics such as CR-39, polycarbonate, or TR90. CR-39 is a lightweight plastic that offers excellent optical clarity and scratch resistance, making it a common choice for everyday reading glasses. Polycarbonate lenses are more impact-resistant and durable, providing additional protection for users who may be more active or prone to accidents. TR90, a flexible thermoplastic material, is often used in sports or ergonomic designs, as it is lightweight, highly durable, and resistant to bending or breaking.
The blue light filtering layer is applied either as a coating or embedded within the lens material itself. This layer selectively blocks or absorbs high-energy visible (HEV) blue light emitted from screens such as computers, smartphones, and LED lighting. By reducing blue light exposure, these lenses help minimize eye fatigue, headaches, and potential disruption of circadian rhythms.
The frames of blue light blocking reading glasses are commonly made from materials like TR90, acetate, or metal alloys. TR90 frames are lightweight, flexible, and durable, making them comfortable for extended wear. Acetate frames offer a combination of strength and style, allowing for a variety of fashionable designs. Metal alloys, including stainless steel and aluminum, provide a sturdy, long-lasting frame with a sleek appearance.
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