CR39 UV400 colour-changing anti-blue light computer glasses with photochromic orange lenses and TR90 flexible frame in 11 colour options, protective eyewear for screen use and outdoor glare reduction.
CR39 UV400 colour-changing anti-blue light computer glasses with photochromic orange lenses and TR90 flexible frame in 11 colour options, protective eyewear for screen use and outdoor glare reduction.
CR39 Photochromic Anti-Blue Light Glasses with TR90 Frame and 11 Colour Choices
Designed for modern digital lifestyles, these protective glasses combine functional lens technology with a practical frame design. The core feature is the CR39 lens, which provides certified UV400 protection alongside a blue light filter to help reduce eye strain from computers, smartphones, and tablets. A unique photochromic property allows the orange-tinted lenses to adapt their light transmission in response to ambient brightness, making them suitable for transitioning from indoor screen use to outdoor environments. Paired with a lightweight and flexible TR90 frame, this eyewear focuses on comfort and durability for all-day wear. With 11 distinct frame colour options available, the glasses offer a degree of personalisation to suit individual tastes while maintaining their primary protective function.
Features and Construction
The construction of these glasses centres on two key material choices: the CR39 ophthalmic lens and the TR90 frame. Each component is selected for its established properties in eyewear manufacturing, contributing to a product built for regular use without unnecessary complexity or unsupported performance claims.
Material and Build
The lenses are made from CR39, a thermoset plastic widely used in the optical industry for its good optical clarity, scratch resistance, and ability to be tinted and coated. Here, it is utilised for its UV-blocking capabilities (UV400) and to host the blue light filtering and photochromic functions. The frame is constructed from TR90, a thermoplastic material noted for its high flexibility, strength-to-weight ratio, and hypoallergenic properties. This combination results in a pair of glasses that is both lightweight and resilient, designed to withstand the bending and twisting associated with daily handling.
Size and Practical Fit
While specific frame dimensions (e.g., lens width, bridge, arm length) are not detailed in the source, the use of TR90 material inherently contributes to a more adaptable fit. Its flexibility allows the frame to gently conform to different face shapes without excessive pressure, aiding comfort. The standard sizing implied by the product design suggests suitability for average adult proportions. The available choice of 11 colours (C1 through C11) allows users to select a frame that aligns with their aesthetic preference, which can influence perceived fit and satisfaction.
Uses and Placement
These glasses are defined by their application against specific modern visual stressors. Their utility spans both focused task environments and general daily activities where light exposure is a factor.
Event or Professional Use
In professional or educational settings requiring long hours in front of digital screens—such as office work, graphic design, coding, or online learning—the blue light filtering function aims to mitigate computer vision syndrome symptoms like dry eyes and headaches. The UV400 protection is also relevant for professionals who work near windows or under strong artificial lighting. The photochromic lens adds value for those who move between indoor and outdoor settings during the day, like delivery personnel or individuals with commutes, eliminating the need for a second pair of sunglasses.
Everyday Home Use
For everyday home use, these glasses serve during leisure screen time, including gaming, streaming films, or browsing social media. The orange lens tint can enhance contrast on displays, potentially reducing eye fatigue. The UV protection is beneficial for general outdoor activities around the home, such as gardening or reading in the garden. The simple care requirements—wiping with a soft cloth and storage in the provided box—make them a low-maintenance accessory suitable for household integration.
Benefits and Buying Value
The value proposition rests on the integration of multiple protective features into a single, straightforward product. It addresses a common need without overcomplicating the offering or making unsupported claims about performance levels or health outcomes.
Reuse and Low Maintenance
Built from durable materials (CR39 and TR90), these glasses are designed for repeated use over time. The scratch-resistant nature of CR39 lenses helps maintain clarity, while the flexible TR90 frame resists breakage from minor drops or flexing. This durability, coupled with the simple cleaning and storage instructions, suggests a product intended for long-term ownership with minimal ongoing cost or care effort.
Why Choose This Product
This product may be chosen for its specific combination of UV400 protection, blue light filtering, and photochromic adaptation in one pair of glasses. The choice of CR39 and TR90 materials indicates a focus on established, reliable components rather than generic plastics. The availability of 11 frame colours offers more selection than many basic protective glasses, allowing for personal expression. It provides a consolidated solution for users seeking screen protection that also adapts for occasional outdoor use, without the need to purchase and switch between two separate products.
