eTV is a mid-range lens, and Nikon prefers mid-to high-end lenses. There is not much difference between the two, and the visual difference in price and wearing is not obvious. Essay may be cheaper. But if you choose functional lenses, such as progressive lenses and anti-fatigue lenses, Nikon's advantages are obvious.
Glasses are articles worn in front of eyes by combining lenses and shelves, which are used for improving eyesight, protecting eyes or for decorative purposes. Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia or strabismus, amblyopia and so on.
glasses are composed of lenses and frames. There are 15 kinds of myopia glasses, hyperopia glasses, reading glasses and astigmatism glasses, plain glasses, computer goggles, goggles, swimming goggles, night vision goggles, e-sports game goggles, goggles, sunglasses, toy glasses and sunglasses. There are also special glasses for viewing 3D stereoscopic images or virtual real images. Other types of glasses include goggles, sunglasses, swimming goggles, etc., which provide various protection for eyes. Modern glasses usually have a nose pad in the middle of the lens and a cushion at the position where the left and right arms rest on the ear. People who love beauty or are not used to wearing glasses can choose to correct their vision with contact lenses.