Have you ever wondered how exactly the human eyes work?
We often take for granted everything we use our eyes for, simply blinking them open in the morning and focusing in on our surroundings. For us, the world is seen in wavelengths of red, green, and blue, whereas our pets and other animals see in different shades of yellow and blue.
To fully understand how the human eye works, we must understand just how complex a system it is. You can think of the eye like a camera or microscope if you will because they rely on the use of lenses to both capture and process light. There are many different components that go into this process of seeing, which can be overwhelming, to say the least!
Some of these different parts include:
- Vitreous body
- Central retinal artery
- Optic disc
- Central retinal vein
- Ciliary body
What is the process of seeing?
When you look at an object, light reflects off it and enters the eyes through the cornea. This is what allows you to actually see whatever it is you are looking at. Once this light enters into the eye, the cornea refracts (or bends) to allow for rays to pass into the pupil. Then, the iris (the colored part of the eye) starts to open and close, controlling how much light passes through.
The retina – a very important part of the eye – is made up of millions of small light-sensitive receptors, called rods and cons. These receptors are what allow the eyes to make out objects, turning them into different shapes when hit by light.
At this point, an electrical message travels to the brain by way of the optic nerve. This is important, as it shows that your brain actually plays a major role in seeing – not just your eyes.
How the Human Eye Works: Your Questions Answered
We hope the above information has given you a bit more understanding of how the eyes work and see. Here at First Eye Care McKinney, we strive to educate our patients and ensure all their burning questions are answered. We know this subject can get a bit overwhelming, so we thought it would be easier to answer some of the most common questions we field about how the human eye works:
Do we see with our eyes or brain?
As mentioned briefly above, we actually “see” more with our brains than we do with our eyes. Our eyes assess and collect all the visual information necessary, but it is the brain that processes this information and allows us to actually comprehend what it is we are looking at.
How do glasses and contacts help our eyes see?
Now that you have a better understanding of how the processing of seeing actually works, let’s look at the role of glasses and contacts. In the event your eyes are abnormally shaped, the lens will have a nearly impossible time focusing light on the retina. When looking at an object, the light may either fall in front of or behind the retina, creating blurriness and distortion. This will depend on the type of vision problem you have, something that can be discussed with your McKinney eye doctor.
Why it’s Important to Get Regular Eye Exams
If you are someone who needs glasses or contacts to see clearly, you are actually part of the majority. Many people need corrective lenses, especially as they get older and their vision starts to change even more. One of the smartest things you can do for your vision health is to get a comprehensive eye exam at least once per year.
Vision problems can develop seemingly out of nowhere and early detection is key. By making it a point to see your First Eye Care McKinney doctor on a regular basis, you will be protecting your eyes and ensuring any issues are caught before they get worse.
To learn more about how our eyes work or to schedule a comprehensive eye exam, please contact First Eye Care McKinney today.