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Finally, the retailer's optical department also offers options that are important to corrective eyewear buyers, including: HD progressive and polarized lenses. Transitions photochromic lenses ...
Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light around 590 nm that excites both the L- and M-cones (yellow-green wavelengths). They are often combined with an additional stopband in the short wavelength (blue) region to minimize the tint on the lenses and approximate a neutral-density filter. They improve on ...
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
Coloured and neutral-density filters. An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency ...
At Costco, the smaller Coho 55-quart roto cooler costs $140. Evidently it holds less, but costs more, so Walmart shoppers should be happy to see they’re getting the better deal.
Lowes. Home-improvement store Lowes sells paper solar eclipse glasses in stores and online for as little as $2.48, according to its website. It also has a handful of eye and phone protection ...