Your eyesight plays a critical role in your wellbeing, which is why safeguarding your visual health is essential. It’s also important to understand how your eyes work. Read on as Dr. Rob Gerowitz, your provider of optometry and corneal refractive therapy, sheds light on how your eyes give you your sense of sight.
The Process of Seeing an Image
Light rays from objects in your surroundings first pass through your cornea; the clear, dome-shaped structure at the front of your eyes. Next, they enter the pupil, a small opening surrounded by a colored region known as the iris. Your eye care center explains that the iris controls the size of the pupil, reducing the pupil’s size when you’re in bright light, and increasing its size if you’re in the dark.
The next stop on the light rays’ journey through your eyes is your natural lenses, which flatten when you’re looking at something far and curve more when you’re viewing an object up-close. This allows them to accurately bend light toward the retina, the thin tissue layer at the back of your eyes. The retina contains millions of light-sensitive cells called photoreceptors often referred to as “cones” and “rods.” Cones provide clear, central vision and color perception, while rods play a role in giving you good peripheral and low-light vision.
These photoreceptors convert the received light rays into nerve impulses, which the optic nerve then sends to the brain. The occipital lobe at the back of your brain then translates these signals into an image, representing the object you’re looking at.
Maintaining Your Visual Health At Our Palatine Optometry Office
Now that you have an idea of how your eyes perform the complex visual process, it’s time to focus on how to care for them. Having regular eye exams is one of the best things you can do, as this paves the way for early detection of underlying eye conditions and prompt treatment. And, early detection is the key to preventing permanent loss of sight. Our office was one of the first in the U.S. to use the Optomap Retina Exam to view the entire retina without the need for annoying dilating drops.