Men`s presbyopia glasses good quality durable reading glasses blue light blocking photochromic glasses

Multi-focus features:
Principle: This kind of reading glasses have multiple focal areas on the lens, and different areas have different degrees. Generally speaking, the upper area of the lens is low, suitable for looking at distant objects, such as looking at road signs when walking, distant scenery, etc.; The middle area of the lens is moderate, suitable for objects with a great distance, such as watching computer screens and operating electronic equipment; The lower area of the lens has a higher degree, which is mainly used to see nearby objects, such as reading, reading newspapers, and watching mobile phones. Through this design, the wearer's visual needs can be met at different distances, without frequent replacement of glasses.
Advantages: provides convenience for the wearer, especially for people with both farsightedness and presbyopia problems, a pair of glasses can solve the different needs of seeing far and near, avoiding the trouble of carrying multiple pairs of glasses. Moreover, in daily activities, it can quickly and naturally switch between visual scenes at different distances, improving visual adaptability and comfort.
Color change function:
Principle: The color-changing function of multi-focus reading glasses is based on special color-changing substances added to the lens, such as silver halide. Under normal indoor light conditions, the lenses are transparent, showing the state of ordinary reading glasses. When the lens is exposed to ultraviolet radiation, such as in an outdoor environment with strong sunlight, the discoloration substance will undergo a chemical reaction that darkens the color of the lens and plays a similar role to sunglasses, reducing the stimulation of ultraviolet light and strong light on the eyes.
Advantages: This color-changing function is very practical. On the one hand, it can protect the eyes from UV damage and reduce the risk of eye diseases, such as cataracts and macular degeneration; On the other hand, there is no need to wear extra sunglasses when outdoors, which avoids the trouble of frequent replacement of glasses and also facilitates the daily life of the wearer. Multi-focus features:
Principle: This kind of reading glasses have multiple focal areas on the lens, and different areas have different degrees. Generally speaking, the upper area of the lens is low, suitable for looking at distant objects, such as looking at road signs when walking, distant scenery, etc.; The middle area of the lens is moderate, suitable for objects with a great distance, such as watching computer screens and operating electronic equipment; The lower area of the lens has a higher degree, which is mainly used to see nearby objects, such as reading, reading newspapers, and watching mobile phones. Through this design, the wearer's visual needs can be met at different distances, without frequent replacement of glasses.
Advantages: provides convenience for the wearer, especially for people with both farsightedness and presbyopia problems, a pair of glasses can solve the different needs of seeing far and near, avoiding the trouble of carrying multiple pairs of glasses. Moreover, in daily activities, it can quickly and naturally switch between visual scenes at different distances, improving visual adaptability and comfort.
Color change function:
Principle: The color-changing function of multi-focus reading glasses is based on special color-changing substances added to the lens, such as silver halide. Under normal indoor light conditions, the lenses are transparent, showing the state of ordinary reading glasses. When the lens is exposed to ultraviolet radiation, such as in an outdoor environment with strong sunlight, the discoloration substance will undergo a chemical reaction that darkens the color of the lens and plays a similar role to sunglasses, reducing the stimulation of ultraviolet light and strong light on the eyes.
Advantages: This color-changing function is very practical. On the one hand, it can protect the eyes from UV damage and reduce the risk of eye diseases, such as cataracts and macular degeneration; On the other hand, there is no need to wear extra sunglasses when outdoors, which avoids the trouble of frequent replacement of glasses and also facilitates the daily life of the wearer.