Ultraviolet light has been known to cause harmful effects like sunburns and skin cancer. Meanwhile, blue light, which is popular for being more environmentally friendly, may also possibly cause disease.
In this post, your vision therapy provider, Institute for Control of Eye Myopia in Children, discusses the dangers of blue light to your health.
Blue Light and Sleep
Different colors in the light spectrum have various effects. Blue wavelengths, in the daylight hours can boost attentiveness, reaction times and the mood. However, it can be a bother at night. Lighting at home and the wide use of digital devices increase your exposure to blue light.
Circadian rhythm refers to your sleep-wake cycle. According to Dr. Charles Czeisler of Harvard Medical School, daylight aligns a person’s body clock with the environment. Light exposure disrupts the production of melatonin, a hormone that regulates the circadian rhythm or sleep-wake cycles. This is why it’s suggested that night shift workers wear blue light-blocking eyewear. Visit your eye doctor for an eye exam and proper prescription on protective eyewear.
Effects of Blue Light to Health
In a Harvard study, 10 people were placed on a schedule that intended to shift their circadian rhythm. The blood sugar levels of the participants became significantly raised, putting them into a prediabetic state. Their level of leptin, a hormone that makes you feel full after a meal, went lower.
It was also discovered that dim light exposure can alter the circadian rhythm and melatonin production. Light exposure at night is one of the reasons people don’t get sufficient sleep. The researchers linked to lack of sleep a higher risk of depression, diabetes and cardiovascular problems.
To protect yourself from blue light at night, you can use dim red lights for nightlights. It’s also recommended not to look at bright screens two to three hours before going to bed. If you work at night and are required to use digital devices, you may consider wearing blue-blocking glasses.
Children’s eyes are more prone to higher light transmittance, which allows more UV and blue light into the lens and retina. Routine eye exams are important to preserve and maintain your vision. Visit Institute for Control of Eye Myopia in Children for vision correction services. Contact a local myopia control specialist today to learn more about our offers.