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What is the truth about UV400 ?2023-06-18 11:05:25: UV400 lenses block 99% or more of ultraviolet radiation across the full UVA, UVB, and UVC spectrum (wavelengths below 400nm). This is the baseline standard recommended by the American Academy of Ophthalmology for any quality sunglass.A common misconception is that darker lenses mean better UV protection. In reality, dark tints only reduce visible light. Without proper UV400 blocking, dilated pupils behind dark lenses can actually allow more harmful UV rays to enter the eyes....

What is blue light protection ?2020-02-11 04:01:21: Blue light is part of the visible spectrum (380–500nm). While some blue light helps regulate our circadian rhythm, high-energy short-wave blue light (415–455nm) can cause eye strain and disrupt sleep.Blue light blocking glasses work by using special coatings or base materials to filter out this harmful spectrum. However, they are not a cure for myopia.For the best protection, choose products that meet safety standards and avoid overly dark lenses. Ultimately, the 20-20-20 rule—taking a break every 20 minutes—is the most effective way to maintain healthy vision....

Polarized vs. Regular Lenses: What's the Difference?2020-02-11 04:01:18: Regular tinted lenses simply darken your overall view by reducing light intensity uniformly. They cannot distinguish between useful light and harmful reflected glare.Polarized lenses, on the other hand, contain a special filter that blocks horizontally polarized light — the type of glare reflected off roads, water, snow, and glass. This results in sharper vision, richer colors, and less eye fatigue.Polarized lenses are highly recommended for driving, fishing, and skiing, but may cause screen darkening on LCD displays.When choosing, always look for the UV400 label to ensure full ultraviolet protection....

Why Acetate Frames and PC Lenses Don't Mix ?2020-02-11 04:01:14: Pairing polycarbonate (PC) lenses with acetate frames is a recipe for lens cracking — and the reason comes down to both chemistry and physics.Acetate is mildly acidic, which gradually degrades PC material over time. Meanwhile, PC lenses carry high internal stress from their injection-molding process. When forced into acetate's tight, shrinking frame groove, the accumulated stress exceeds the lens's tolerance, causing cracks.The ideal match? Resin lenses (especially MR-8) for acetate frames, and PC lenses for flexible TR90 or metal frames...

Why Polarized Lenses Are Unsafe in Low-Light Settings ?2020-02-11 04:01:08: Polarized lenses are designed for bright daylight — never for nightclubs, bars, or any dimly lit setting.The reason is simple: polarized lenses block a significant portion of incoming light. In low-light environments, this drastically reduces visibility, making it harder to see people, obstacles, and exits. Additionally, polarized filters can cause LED screens, neon signs, and laser lights to appear dimmed, distorted, or completely blacked out.For low-light settings, the best choice is a clear resin lens with an anti-reflective (AR) coating, which maximizes light transmission while reducing glare from artificial lighting....

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