Cross the road or go to the shade, you should remove the sunglasses in time, because from the light to the darker, or to the concentration of people and vehicles, the eyes have an adaptation process, which can easily lead to the eye can not see clearly, at this time should remove the sunglasses in time, it’s safer.
Wearing sunglasses should not be too long. It is recommended to take a rest for an hour or two and gently massage the eye area. Otherwise, symptoms such as headache, irritability, blurred vision may occur, and even vision may be degraded. The crystal of the old man is aging and can not wear sunglasses for a long time. Otherwise, the roots of the iris will accumulate, causing the outflow of the aqueous humor to be blocked and the intraocular pressure to increase. In addition, elderly people with glaucoma, retinitis, color blindness, and night blindness are not suitable for wearing sunglasses.
In addition to using sunglasses to protect the eyes, it is also important to note that the ultraviolet light reaches its maximum intensity from 10 am to 2 pm. At this time, it should be minimized to go out, or less to reflect light, such as water and sand. It increases the chance that light will be projected into the eye.