Many fashion influences choose to wear cool sunglasses in the hot summer to enhance the fashion sense of their outfits. But many people may wonder: do I usually need a pair of sunglasses in summer? After all, I don’t need to strike a pose. Today, I will answer this question for you.
Is a pair of sunglasses really necessary? Normal eyes can adapt to light by themselves. The main reason for wearing tinted sunglasses is that the eyes feel uncomfortable, or that long-term exposure to strong sunlight at work may damage the eyes. “People’s ability to tolerate strong light varies. If you have to squint or often shed tears under the scorching sun, then you should wear sunglasses,” an ophthalmologist advised. Strong light is harmful to the eyes. A person who often stays in the scorching sun will have their night vision reduced by half. Therefore, if you are walking a long distance or staying on the beach, you should wear sunglasses.
However, unless you need to wear dark sunglasses as specified by an ophthalmologist due to pathological conditions, do not always wear dark sunglasses to look cool or cover up your eye diseases. A publication of the Hong Kong Consumer Council once warned that frequently wearing sunglasses unnecessarily can be addictive, and it will feel very uncomfortable to go without them during the day afterwards. Will cheap sunglasses damage the eyes?
The simplest answer is: quite possibly. Cheap tinted sunglasses are made by blowing rather than grinding. Blown sunglasses is bound to have various defects.
Substandard sunglasses are sold everywhere. Retailers say these defects are very minor and ordinary people will not notice them. This statement is specious. When the defects are minor, the eye muscles can more or less adapt. However, constant adaptation will eventually cause muscle and nerve fatigue. Of course, if you are just sunbathing and your eyes don’t need to work, the problem won’t be so serious. But if you have to work outdoors, such as in construction, reading, playing tennis, or driving long distances under the scorching sun, your eyes will keep moving up and down, left and right, from near to far, and you will use the entire range of the lenses. In such cases, it will be difficult to constantly adapt to a pair of lenses with poor quality.
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