Blue Light can impact your health in many ways.
The PupilBox team works hard to :
Find the most relevant, up-to-date research; and
Convert the academic text into language we can all understand.
Explore this section to understand how your eyes work and how Blue Light impacts your health.
HOW OUR EYES WORK
The eye is one the most complex organs in the human body..and perhaps the coolest in our opinion. This anatomy brief doesn’t do justice to the intricacies of the visual system, rather highlights the important aspects of how light enters our eye; providing a foundation of knowledge that will help you understand how light and your visual lifestyle can impact your health if not protected.
FROM LIGHT TO SIGHT
Light hits the CORNEA. The cornea is clear layer on the front of the eye responsible for bending the light rays (starts the focus process) before entering the eye.
Then the IRIS, that pretty colored part of your eye, controls the amount of light entering be changing the diameter of the PUPIL. Our pupils expand in dark environments to allow more light through and contract in bright environment. (*This is an important concept when lighting your work environment; check out our Top Tips for more information.) As we grow older, the pupil becomes smaller. In other words, children have larger pupils which allow more Blue Light into the eye.
The LENS is directly behind the pupil. Also referred to as the crystalline lens, this part of the eye does something called ‘accommodation’ which changes the shape of the lens to focus on objects at different distances. (*Don’t let your lens stay in one shape all day in the office, make sure to practice the 20/20/20 rule). When discussing Blue Light, it’s important to understand that our lens naturally changes color over time. As we grow older, the lens changes to a more yellow color, preventing shorter, damaging wavelengths of light from entering the eye. In other words, children’s lens lack the natural coloring to protect certain harmful light. (*starting to see the trend? Children are at higher risk, see more here)
The focused light travels through the gel substance area called the VITREOUS BODY to reach the RETINA. The retina is a light-sensitive layer of tissue where the light is converted to electronic signals. The very center of the retina is called the MACULA. Conquencidently it is this center part of the retina that is responsible for our central, pinpoint vision. Our peripheral vision comes from the area of the retina surrounding the macula. (*We get into the macula in more detail here)
Finally the OPTIC NERVE sends the electronic signals from the retina to the visual cortex of the brain, producing an image.