You may be aware that too much exposure to ultraviolet light can lead to sun damage like sunburn and skin cancers. Blue light, on the other hand, can affect your health even if you’re not exposed to the sun.
Digital devices and modern light bulbs are major sources of blue light. In this post, your local certified opticians from Vision Care Associates discuss how blue light affects your vision and health.
Effects of Blue Light
Different colors of light in the spectrum have different effects. Blue wavelengths are helpful in the daylight hours. They improve reaction times, attention and mood but they can be harmful at night. The wide use of digital devices and energy-efficient lighting increases your exposure to blue light.
We all have different circadian rhythms or sleep-wake patterns. According to Dr. Charles Czeisler of Harvard Medical School, the daylight aligns a person’s body clock with the environment.
Studies suggest that light exposure at night is linked to some types of cancer, heart disease, diabetes and obesity. There is still no evidence that nighttime exposure causes the said diseases. However, light exposure disrupts the production of melatonin or the hormone that regulates sleep. The secretion of melatonin is associated with the time of the day. It increases when it’s dark and decreases when there’s light.
A University of Toronto study compared the melatonin levels of people exposed to bright indoor light who had blue-light-blocking eyewear and those who were exposed to dim light without it. The study had similar results between the two groups. It suggests that night shift workers would benefit from blue-light-blocking eyewear. Visit your local optical services provider, Vision Care Associates, for eyewear that’s suitable for computer use or working in harsh light.
Protection From Blue Light
LED lights produce more blue light compared to traditional fluorescent light bulbs. Incandescent bulbs produce blue lights, but not as much as most fluorescent lights.
You can use a dim red night light as this color of light has the least effect to the circadian rhythm and melatonin production. Avoid using bright-screened devices around two to three hours before bedtime.
Consider wearing protective eyewear if you’re working at night. Vision Care Associates offers different eyeglass lenses depending on your needs and activity. You can rely on us when it comes to medical and emergency eye care services. Call us today at