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The sun is often associated with skin damage and skin cancer, but did you know that moderate exposure to sunlight can be beneficial for our eyes? Sunlight exposure can provide several benefits to our eyes, including improved mood and sleep, reduced risk of nearsightedness, increased Vitamin D production, improved color vision, reduced risk of seasonal affective disorder (SAD), reduced risk of myopia, and better overall eye health.

Exposure to sunlight can help regulate the body's production of the hormone melatonin, which can improve mood and help regulate sleep patterns. This can have a positive impact on our mental health and well-being.

When we are exposed to sunlight, our eyes detect the blue light wavelengths in the sunlight and send signals to the brain to suppress the production of melatonin. This signals the body that it's daytime and helps to promote wakefulness and alertness. When the sun sets and we are exposed to darkness, the body starts to produce more melatonin, which signals the body that it's time to sleep.

Myopia, commonly known as nearsightedness, is a condition in which distant objects appear blurry, while close objects can be seen clearly. It is a common condition that affects millions of people worldwide, with its prevalence increasing in recent years. While genetics plays a role in the development of myopia, environmental factors such as excessive near work and lack of outdoor activities have also been implicated.

Studies have found that children who spend more time outdoors and are exposed to sunlight have a lower risk of developing myopia. This is because sunlight exposure can help to stimulate the release of dopamine, a neurotransmitter that plays a crucial role in regulating eye growth. Dopamine is produced in the retina in response to bright light and can help to prevent the eye from elongating and developing myopia.


Sunlight exposure can also stimulate the body's production of Vitamin D, which is essential for bone health and has been linked to a reduced risk of several eye conditions, including age-related macular degeneration. In addition, exposure to natural sunlight can improve color perception and sensitivity, which can enhance our ability to distinguish between different colors and shades.

Seasonal affective disorder (SAD) is a type of depression that is related to changes in seasons and is commonly experienced during the winter months. Sunlight exposure can help alleviate the symptoms of SAD by helping to regulate the body's circadian rhythms and melatonin production.

seasonal affective disorder

Finally, exposure to natural sunlight can promote better overall eye health by improving blood circulation and oxygen supply to the eyes. This can help to prevent eye conditions such as glaucoma, cataracts, and macular degeneration.

While moderate exposure to sunlight can be beneficial for our eyes, it's important to protect our eyes from excessive sunlight and wear sunglasses and hats when spending extended periods of time outdoors. Excessive exposure to sunlight can increase the risk of conditions such as cataracts, macular degeneration, and cancer of the eyelids. By balancing the benefits and risks of sunlight exposure, we can help to promote better overall health and well-being for our eyes and our bodies.