How Your Eyes Work Together to Create Vision
When you look at something, each eye receives light rays which land on your retinas and form images. These images are passed along the optic nerve to the brain where the two images are combined into the one clear picture you see.
Understanding Refractive Error
The cornea, which is at the very front of your eye, and the lens, which sits behind the cornea, work together to bend (refract) the light rays to bring an image into proper focus. Refractive error, or blurred vision, occurs when something is wrong with this focusing system. In addition to refractive error, other eye or health conditions may interfere with the focusing system and affect how well you see.
Binocular Vision & Eye Health
Although each eye processes what it sees independently, both eyes must work together to see properly. Binocular vision gives you depth perception and in order to see with binocular vision, your eyes must be aligned correctly. Your optometrist examines your eyes to determine how clearly each eye sees, how well your eyes work together as a team, and the health of your eyes. Because blood vessels are clearly visible inside your eyes, conditions such as high blood pressure, diabetes, and others can be detected during your regular eye examination.