Eyesight as one of the most precious things in life. As a highly developed sense, it’s important for nearly everything we do, from the cognitive abilities required in learning and working to simply going about our daily business. Our vision stems from the eyes, adjacent structures, and the brain functioning as an integrated system of great precision and complexity.

It is therefore imperative that we preserve our sight for as long as possible. And so, by understanding how the eye works in relation to light and the potential dangers it can have overtime, we can take control of our environments to ensure optimal vision and eye health.

To do that, it’s important to understand the human eye as a complex sense organ containing receptors that respond to the sensation of brightness, and it’s this that enables us to see in both dim and well-lit environments. This process works when light hits the light-sensitive layer of tissue at the back of the eye, known as the retina, and special cells called photoreceptors turn it into electrical signals. These signals travel from the retina through the optic nerve to the brain, where they are interpreted into the images we call our vision.

While light helps us to see, chronic exposure to certain types of light overtime, such as blue light from our devices or UV light from the sun, can cause permanent damage to our sight, so it’s imperative that we only expose ourselves to them in moderation