It’s easy to take your eyesight for granted or feel like you don’t have any control over your eye health—you either have good eyesight, or you don’t, right? Although to a certain degree eye function is genetic, you can still make a difference in your own eye health. By taking care of your eyes, and paying attention to any changes in vision, you can catch problems early and prevent them from worsening.
How Eyes Work
It’s important to know how our eyes work and what causes poor vision, so that you know when to seek help for issues. The eye is made up of several different parts that work together to translate the world into signals the brain can understand.
Beneath a clear membrane called the “conjunctiva” is the cornea, a cone-shaped layer where light enters the eye. Behind the cornea is the “anterior chamber” and the iris and pupil.
The dilation and constriction of the iris muscles affect the size of the pupil, dictating how much light is let in to pass through the “lens”, which manipulates the light and changes shape in order to focus on certain objects. Light then travels to the “retina”, where light-sensitive tissue known as photoreceptors relay information in the form of electrical pulses to the brain through the optic nerve.
Learn more below: