The photochromic single-vision lens is constantly developing and needs continuous improvement, especially in improving the fatigue resistance of the current organic color-changing factors and the use of inorganic color-changing factors, so that the application of photochromic single-vision lenses will be more extensive.

A good pair of photochromic single-vision lenses can achieve the effect of darkening and lightening within a specified time, and can effectively intercept ultraviolet rays to ensure sufficient visible light. However, some inferior photochromic lenses absorb visible light , And some fake and inferior products even do not change color at all.

Wearing these photochromic single vision lenses is extremely difficult to see objects, which leads to pupil dilation, which puts the eye muscles and optic nerves in a highly tense state. In the long run, wearing such unqualified photochromic glasses will actually cause vision loss.

It needs to be guaranteed when making photochromic single vision lenses; the color of each lens is the same, and the transmittance of the lens is more than 80% in the transparent state, which meets the national standards of the lens, and meets the regulations of various international standards for safe driving. No effect .