Eyekepper Titanium Rimless Tinted Computer Reading Glasses for Men and Women

The Eyekepper BB60 lenses feature a transparent design with a 12-layer yellowish coating, providing 100% UV protection. Extensive testing using a spectrometer has demonstrated their impressive blue light blocking capabilities. These lenses block 35% of blue light within the 500nm wavelength range, 42% within 490nm, 49% within 480nm, 55% within 470nm, 60% within 460nm, 64% within 450nm, 67% within 440nm, 77% within 430nm, 97% within 420nm, and over 99% within the 400nm-410nm range. This results in a 20% color distortion due to the filtering of 30% of the blue color spectrum.

The lenses are made from memory titanium frames, with a lens width of approximately 1 7/8 inches (47mm), a frame width of around 4 3/4 inches (120mm), a lens height of roughly 1 5/8 inches (42mm), a bridge (DBL) of about 11/16 inch (18mm), and temple lengths of approximately 5 1/8 inches (130mm), without spring hinges.

According to the Occupational Safety & Health Administration, the preferred viewing distance for VDTs (Visual Display Terminals) is between 18 and 24 inches (45.72 and 60.96 centimeters, respectively). The Eyekepper BB60 lenses are designed to filter out 100% of the most harmful low-level blue light and nearly 60% of high-energy visible light emitted by tablets, phones, TVs, computers, and other digital devices.

The Eyekepper product line includes several options tailored to different levels of blue light protection. The BB40 model blocks 40% of blue light in the 395nm-500nm wavelength range, the BB60 blocks 60%, the BB90 blocks 90%, and the BB98 blocks nearly 100% of blue light in this spectrum.

To assess the blue light protection capabilities, Eyekepper utilizes various testing methods. The spectrum analyzer is used to measure the blocking performance at specific wavelengths, such as 400nm, 430nm, 460nm, and 550nm. The blue light meter tests the remaining blue light at a wavelength of 450nm, providing data on the visible light, blue light, and UV light levels. Additionally, a UV pen-shaped light and a card are used to test the UV light protection, focusing on wavelengths below 400nm.

Before shipping, Eyekepper thoroughly tests each pair of glasses, measuring the lens strength, pupil distance, horizontal position, astigmatism, prism, and blue light spectral distribution to ensure optimal performance.

It's important to note that blue light, which is positioned next to UV light on the light spectrum, is emitted in high quantities by the backlit screens of our electronic devices, such as smartphones, tablets, laptops, and TVs. This blue light can disrupt our internal circadian rhythms, making us feel like it's daytime when it's actually closer to nighttime, and preventing the natural production of melatonin, which helps us fall asleep.

To maintain the integrity of the Eyekepper violet block glasses, it's crucial to avoid cleaning them with paper towels, clothing, alcohol, household detergents, or soaps.

product information: