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Home » Scleral » What Is the Shape of a Healthy Eye and How Does It Affect Vision?

What Is the Shape of a Healthy Eye and How Does It Affect Vision?

eyes eye care 640x350The human eye is a biological piece of functional art, capable of producing colorful moving three-dimensional images with high precision. At the same time, one can marvel at the aesthetic beauty of the human eye and its shape.

The Shape of a Healthy Eye

In a healthy and perfectly shaped eye, light passes through the cornea and crystalline lens, and is accurately focused onto the retina, located at the back of the gel-filled eyeball. This process enables an image to be passed onto the optic nerve and then the visual cortex of the brain. Accurate focus and convergence depend on the proper shape of each part of the eye. However, eyeballs can be either shortened (hyperopia) or elongated (myopia).

Unhealthy Eye Shapes That Impact Vision

The Myopic Eye

In an elongated myopic eyeball, the distance between the lens and retina is too long, leading the image to come into focus before reaching the retina. As a result, the photosensitive cells of the retina pick up a blurry image.

The Hyperopic Eye

In hyperopia or farsightedness, the opposite is the case. The eyeball is too short, as is the distance that light travels from lens to retina. Therefore, the image comes into focus behind the retina, causing distant objects to appear clear, whereas close ones do not come into proper focus.

The Cornea

While the crystalline lens is flexible and auto-adjusts its shape for proper focus, the cornea is static. A healthy cornea maintains its smooth dome shape. However, if the cornea is weak, the structure of the cornea cannot hold this round shape, causing the cornea to bulge outward and downward like a cone. Perfect curvature of the cornea ensures the correct bending of incoming light onto the lens, whereas inadequate curvature results in a refractive error.

An uneven or irregularly shaped cornea also distorts the image that forms at the retina. Common corneal irregularities include astigmatism and keratoconus.

Keratocoonus Labelled

Scleral Lenses for a Smooth Eye Shape

Scleral lenses are large contact lenses that rest on the sclera — the white part of the eye. The lenses span over the cornea, making them ideal for a deformed cornea as they even out the irregularity to create a perfectly shaped eye.

Contact Dr. Carole Burns at Professional VisionCare to learn more about how your eye shape affects your vision. We'll be happy to discuss the different correction methods available that offer you sharp, comfortable and clear vision all day, every day.

We receive clients from Lewis Center, Westerville, Johnstown, Northeast Columbus, and throughout Ohio.



 

Resources:

https://www.lasikmd.com/blog/eye-shapes-affect-vision

https://www.everydayhealth.com/vision-center/the-healthy-eye/how-the-eye-works.aspx

https://www.nvisioncenters.com/eye-shapes/

https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/refractive-errors

Important Notice

March 18th, 2020

Professional VisionCare and The Solution Center realize that COVID-19 is impacting all of our lives.  Please know that we stand with you, your families and our entire community during this difficult time.

Safety is our primary concern, safety for you, your loved ones, our team and our community.  To ensure the highest level of safety we are following a directive by the CDC which we received last evening to postpone all non-essential vision care, this means, all routine eye examinations will be postponed until after the virus has been contained. We will be available to see anyone that has an eye emergency.  If you have an eye problem, we will assess your individual concern and speak with you personally to determine the appropriate care.

If you have an appointment scheduled with us, you will be contacted by phone.  If we are unable to reach you by phone, we will send an email and a text.  We will first be calling patients who are scheduled in the next 2 weeks and continue to reach out to all patients as the landscape changes.

We genuinely care for all of you and all that we serve alongside. We will always do what is in the best interest of our patients and our team.  We will keep you informed as changes occur or as we have news to share.  Please be safe and take all necessary precautions, we are in this together and we will make it through.

Blessings to all of you,

The Doctors and Staff at Professional VisionCare