Menu   WellSpan Health

Health Library

Health Library

Normal Vision

Illustration demonstrating normal vision

What is normal vision?

In order to better understand how certain problems can affect your child's vision, it is important to understand how normal vision occurs. For children with normal vision, the following sequence takes place:

  1. Light enters the eye through the cornea, the clear, dome-shaped surface that covers the front of the eye.

  2. From the cornea, the light passes through the pupil. The iris, or the colored part of your eye, regulates the amount of light passing through.

  3. From there, it then hits the lens, the transparent structure inside the eye that focuses light rays onto the retina.

  4. Next, it passes through the vitreous humor, the clear, jelly-like substance that fills the center of the eye and helps to keep the eye round in shape.

  5. Finally, the light reaches the retina, the light-sensitive nerve layer that lines the back of the eye, where the image appears inverted.

  6. The optic nerve is then responsible for carrying the signals to the area of the brain (the visual cortex) which assembles the signals into images (for example, our vision).

Normal Vision - WellSpan Health

Online Medical Reviewer: Bogus, William J., OD, FAAO
Online Medical Reviewer: Grantham, Paula, RN, BSN
Last Review Date: 2013-03-25T00:00:00
Last Modified Date: 2013-04-04T00:00:00
Posting Date: 2008-11-30T00:00:00
Published Date: 2013-04-04T00:00:00
Last Review Date: 2007-03-30T00:00:00
© 2015 WellSpan Health. All Rights Reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Are you sure you would like to cancel?

All information will be lost.

Yes No ×

About the provider search

This search will provide you with WellSpan Medical Group and Northern Lancaster County (Ephrata) Medical Group primary care physicians and specialists. If we don’t have a WellSpan Medical Group physician to meet your criteria, the search will expand to include community physicians who partner with WellSpan Medical Group physicians through the WellSpan Provider Network or provide care to patients on the Medical Staffs of WellSpan’s Hospitals.

×

Schedule Your Next Appointment Online with MyWellSpan

Use your MyWellSpan patient portal any time to view available appointments, and pick the date and time that best suits your schedule.

Go to MyWellSpan

New to this practice?

If you don't have a WellSpan primary care provider and would like to schedule a new patient appointment with a provider who is accepting patients, just log into your MyWellSpan account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to see the offices that are accepting new patients in relation to your zip code. If you are not enrolled in MyWellSpan, go to www.mywellspan.org, call 1-866-638-1842 or speak with a member of the staff at a participating facility to sign up. New patient scheduling not available at all practices/programs.

Already a patient at this practice?

If you already have a relationship with a WellSpan practice, simply log into your account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to schedule an appointment with any provider or practice that already counts you as a patient. Online scheduling varies by practice/program.

×