What Is Blue Light?
Blue light, a component of the visible light spectrum, is a high-energy, short-wavelength light (not to be confused with UVA or UVB rays). According to the American Academy of Ophthalmology, the sun is the primary source of blue light that we are exposed to. However, our screens and indoor lighting also contribute significantly to our exposure.
One reason blue light has become a concern is that High Energy Visible (HEV) light. This is typically associated with blue wavelengths on the visible light spectrum. HEV is emitted not only by the sun but also by computer screens, cell phones, and other digital devices.
According to some estimates, we spend half our lives staring at screens. We are significantly increasing our exposure, particularly during the COVID-19 pandemic, when many of us are spending more time indoors and in front of screens than usual. Thus, it is critical to understand the effects of blue light.
Disadvantages of Blue Light
Blue light has been linked to eye strain, cataracts, glaucoma, and other ocular diseases. To avoid these conditions, maintain a minimum of 12 inches of space between yourself and your screen and take frequent breaks. While blue light glasses are fashionable, they do little to alleviate eye strain.
However, blue light is not entirely harmful. Blue light is critical for health maintenance because it regulates our circadian rhythm — our natural sleep-wake cycle. Additionally, blue light improves mood and memory and cognitive function.
About the Author:
Germie Alderite is a Registered Medical Technologist in the Philippines. She is currently studying Doctor of Medicine in the said country. Germie worked in an Adventist Wellness Center for a year before entering Medical School. She believes that many transgress the laws of health through ignorance, thus, people need instruction. They need to be impressed with the importance of making their knowledge a guide of life. Physician has many opportunities both of imparting a knowledge of health principles and of showing the importance of putting them into practice.
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