A Guide to Laser Vision Correction

The Human Eye and How Vision Works

How the Eye Works

You may have heard the comparison between a camera and the human eye. Just as a camera takes in light and transforms it into an image on film, your eye does virtually the same thing, only the "film" is your retina and your brain "develops" the image. We see objects when light, which is reflected by the objects, passes through the eyeball lens and strikes the retina, at the back of the eye. Our brains then interpret the shapes, colors, and dimensions of the objects we see. A clearly focused object is the result of normal vision. However, just as an improper amount of light entering a camera lens will distort a photo, if light entering the eyeball does not strike the retina, the result may be distorted vision.

Anatomy of the Eye »