• What Does It Mean To Be Nearsighted Or Farsighted?

    on Apr 19th, 2017

Normally, Light Is Focused Directly Onto The Retina

Before we delve into what it means to be nearsighted or farsighted, let’s first talk about how a normal eye functions. Vision occurs when light enters the eye and, working together, the cornea and the lens refract light to focus onto a point at the very back of the eye called the retina. The retina converts this light into electrical impulses and sends them to your brain. Your brain then produces an image.

When there are imperfections in the eye that prevent light from being focused perfectly on the retina, a refractive error occurs.

The Way The Eye Is Shaped Can Determine Vision

Myopia

Myopia, commonly known as nearsightedness, affects nearly 30 percent of the U.S. population. It occurs when light is focused in front of the retina, instead of directly on it. This happens when the cornea is too curved or the eyeball is too long.

People who are nearsighted have an easy time reading, working on the computer and doing other close work. They struggle seeing when driving, reading a whiteboard at school, watching a movie or trying to identify faces from far away.

Hyperopia

When an eyeball is too short or the cornea isn’t curved enough, farsightedness–or hyperopia–is the result. This causes light to be focused behind the retina, making a farsighted person able to see far away but not close up. Only around 10 percent of Americans have hyperopia, making it much less widespread than myopia.

Those who are farsighted can easily read an eye chart, but may have trouble reading the text book right in front of them. Consequently, farsightedness is often missed in simple vision screenings performed at school. For your next eye exam, come in and get your eyes checked by an eye care professional. We’ll not only ascertain your visual acuity but we will also assure that every aspect of your vision health is taken care of.

Everyone Deserves To Have Good Vision

If you have frequent headaches or eyestrain, you may have a problem with your vision. If you already have glasses or contacts and experience similar symptoms, you may just need your prescription updated. So whether you’re coming in for some new frames, renewing your prescription, or suspect that something in your vision might be off, we’d love to see you in our office. It’s our philosophy that everyone deserves to have good vision!

We love being the eye care professionals you trust!

Top image by Flickr user Harry Metcalfe used under Creative Commons Attribution-Sharealike 4.0 license. Image cropped and modified from original.

You Might Also Enjoy...

Prepare Your Eyes For Allergy Season

Chirping birds, blooming flowers, and warmer weather are just a few of the things we look forward to when spring comes around. We have to admit though, there is one thing about the season that’s not particularly appealing, and that’s allergies.

Preparing For Your Child’s First Eye Exam

The American Academy of Optometry recommends babies receive their first comprehensive visual assessment at six months of age. Having your child’s eyes examined so early will ensure their visual development is on track and can help identify any problems tha

Have You Ever Wondered What A Phoropter Does?

Most patients have wondered what that large, imposing piece of equipment is that they always see at the optometrist’s office. Well, it’s called a phoropter, or a refractor, and it’s an awesome tool we eye docs love to use! Read on to find out more!

Location
Dean Optical
209 South LaSalle Street, Suite 120
Chicago, IL 60604
Phone: 312-637-1717
Fax: (312) 332-5970
Office Hours

Get in touch

312-637-1717