Reading glasses can also adjust the diopter A pair of glasses can see clearly, far, middle and near The most troublesome

Reading glasses can also adjust the diopter A pair of glasses can see clearly, far, middle and near The most troublesome thing about presbyopia is to see things at different distances, and you need to change glasses with different diopters. A British company has launched a reading glasses with adjustable diopter to help reading glasses with reading vision see objects at different distances with just one pair of glasses. These reading glasses are called "eye aligners", and the single lens is composed of two lenses, each lens is flat on one side and half convex on the other side, the two lenses are flat and the other side is concave and convex, and the position of the two lenses is adjusted by the focus dial on the side of the frame, so as to adjust the diopter.

Owen Redding, who invented these glasses, told the British "Daily Mail" that after the age of 40, the lens of the eye gradually hardens, the ciliary muscle gradually paralyzed, and the human eye has a poor ability to adjust to see far and near, and reading glasses are needed to supplement vision, but multiple pairs of glasses may be needed to see objects at different distances.

"For example, you might need a pair of 100-degree reading glasses when you look at a computer, a 200-degree pair for reading, and a 300-degree pair for something very close," he said. The diopter of the "eye aligner" covers the range of 0 to 300 degrees.

A pair of glasses costs 拢70 (about 600 yuan).