Get To Know Your Eyes
- Posted on: Aug 15 2015
You use your eyes all day, every day to read, work, watch movies, drive, and more—but how much do you actually know about how your eyes work? Keep reading to learn a little more about the parts of your eyes.
The cornea is the clear outer layer of your eye that covers the iris and the pupil It protects you from dirt, scratches, dust, and more. Light is focused through the cornea when you look at things.
The sclera is the white coating that goes from the cornea all the way around your eyeball and back around the optic nerve.
The pupil works in a way that is very similar to a camera. It opens and closes to let in specific amounts of light.
The iris is the colored part of your eye that surrounds the pupil. It is connected to the pupil and widens and narrows the pupil depending on what you’re looking and how much light there is available.
The lens sits behind the cornea and it focuses light rays onto the retina. It is shaped sort of like a sphere. The lens can change shape depending on what you are looking at, how close it is, and how much light is around you.
Rods And Cones
Rods and cones are the photoreceptors in the eye. Rods are more sensitive to light and they are useful when you are trying to see in low light situations. Cones are useful for color vision and detailed vision. You have many more rods than cones.
The retina is a sensory membrane inside your eye. It receives the images from the lens and converts them into signals that are sent to the brain through the optic nerve. These signals tell your brain what you are seeing.
These parts of your eyes, and other parts that aren’t mentioned work together to help you see. To learn more about your eyes, and to find out how to protect your vision, schedule an appointment with Roholt Vision.
Posted in: Eye Care