What Situation Should Wear Sunglasses

May 18,2022

Summer light is strong, many people are wearing sunglasses, which is a good protection for our eyes, but you know what cases should wear sunglasses, and what cases not?




Strong sunlight should wear sunglasses


When the sun is strong, if the sun is not blocked, we will feel the light harsh. In fact, too strong UV rays do damage our retina, and when we feel the light blinding our pupils will become smaller, which is reducing the intensity of UV rays reaching the fundus of the eye to avoid retinal damage in a short period of time. Therefore, in this kind of weather, we should wear sunglasses to go out, and choose sunglasses with the role of UV isolation to wear, can avoid the damage of UV to our retina in this kind of weather.


You should wear sunglasses when it is cloudy but with high UV intensity


Many people don't think about wearing sunglasses when it's cloudy, because the light is weak when it's cloudy, so they think the sun won't hurt their eyes, so they don't need to wear sunglasses, which is actually not true. Most of the ultraviolet light is not blocked by the clouds, can directly through the clouds to the ground, but because ultraviolet light is not visible light, so our eyes on it is not set en what feeling, the pupil will not shrink, if the ultraviolet intensity is high but is cloudy when you go out without sunglasses, this time into the bottom of our eyes more ultraviolet light, will cause more damage.


You shouldn't wear sunglasses in the evening or when it's dark


In the evening, the sun has generally set, when the light is weaker, the intensity of ultraviolet light is also decreasing, then wear sunglasses with good light blocking ability, it will cause the wearer blurred vision, can not see clearly around, easy to produce danger, the same reason when it is dark. It is generally recommended that you do not continue to wear sunglasses in the evening or after dark when there is no special need.


Avoid wearing sunglasses with closed-angle glaucoma


Patients with closed-angle glaucoma are mainly due to abnormal closure of the anterior chamber angle, resulting in an increase in intraocular pressure and glaucoma, and when we wear sunglasses, the pupil will dilate, which will aggravate the situation of the closure of the anterior chamber angle, easily leading to a further increase in intraocular pressure, which will aggravate the condition. In addition to not recommending sunglasses for patients with closed-angle glaucoma, it is also not recommended that patients with closed-angle glaucoma spend long periods of time in dimly lit areas, such as shadows and movie theaters.