How the Eye Works

Posted by CooperVision on Tuesday, January 4, 2011

Light from object A is focused by the cornea and crystalline lens to form an upside-down image on the light-sensitive photoreceptors of the retina.  Information is transmitted from these photoreceptors to the brain via the optic nerve.  The quantity of light entering the eye is regulated by the iris (colored part of the eye).  The pupil is the variable-sized black circular opening in the center of the iris.

                                  

This is an animated example of normal spherical vision.
Please note: The brain re-interprets the image, making it appear right-side up.

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On Eye is the contact lens blog from CooperVision. On this site, you will find insights about fitting, technology, and the business of contact lenses. The On Eye blog is designed to meet the needs of both Eye Care Practitioners and consumers. ECP and medical professional-specific portions of the blog will be password protected in order to protect and reserve the privacy of the profession. To read more about our terms of use, please see the Legal tab.

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