The Normal Eye

To see clearly, the two lenses of the eye must work together to focus light clearly onto the back of the eye. The cornea, at the front of the eye, is the main lens, providing most of the eye’s refractive power. The inside lens provides additional focusing power by changing shape to fine-focus images.

The retina, in the back of the eye, captures the light images and electronically sends them to the brain where they are instantly interpreted into sight.

For light images to be directed to the retina properly, the eye must be correctly shaped. If an eye is too long or too short, the lenses are unable to direct light images clearly on the back of the eye. A cornea with uneven curvature also prevents clear focusing.

Due to hereditary and developmental factors, many people have eyes that are not structurally balanced to provide clear, natural images. These structural imperfections result in three different focusing problems: Nearsightedness, Farsightedness, and Astigmatism. Please click on the appropriate item under the FOCUSING PROBLEMS menu for more details on these and other conditions that can affect vision.

The need to understand the intricate structures and functions of the eye has led scientists and engineers to create a vast array of machines and instruments capable of providing doctors with important information. Experiencing an eye examination at Gimbel Eye Centre involves coming in contact with some of the most sophisticated developments of modern technology. With access to state of the art diagnostic equipment, doctors at Gimbel Eye Centre can diagnose and treat the people who come to them for care.

Comprehensive eye examinations are necessary any time there is an indication of a possible visual problem, but they are also important on a regular basis, especially during childhood and from mid-life on through the later years. Some diseases and degenerative factors can subtly harm vision without noticeable warning signs. The earlier these are discovered, the greater the chance for effective treatment.

The number and types of evaluative procedures done on each person during an examination vary with factors such as age, family history, past and present problems, and the purpose of the examination. Many of the procedures are performed by trained assistants who work along with doctors to gather the important information required for a clear understanding of the characteristics of each eye.