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How The Eye Works
The eye is often compared to a camera and similiar in some ways, but in fact, the organ of sight is far more complex and efficient. Not only does the eye focus and snap pictures, it also works harmoniously with the brain and nervous system to process ever-changing images and provide you with the visual information you need for doing everything from hitting a golf ball to reading this article on your computer monitor.
Vision begins when light rays are reflected off an object and enter the eyes through the cornea, the transparent outer covering of the eye. In a single glance, lasting a fraction of a second, our eyes work with our brains to tell us the size, shape, color, and texture of an object. The cornea's rule is to bend or refract the rays that pass through a round hole called the pupil. The iris, or colored portion of the eye that surrounds the pupil, opens and closes (making the pupil bigger or smaller) to regulate the amount of light passing through. The light rays then pass through the lens, which actually changes shape so it can further bend the rays and focus them on the retina at the back of the eye.
Although the eyes are small compared with most of the body's other organs, their structure is incredibly complex. The eyes work together to perceive depth, enabling us to judge distance and the size of objects to help us move around them.
To schedule your eye appointment or for questions, please contact Sarasota Ophthalmology at: 941-955-6363, or
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