How Our Eyes Work

Eyes are an important organ in humans. With help of eyes, a person or a living being can see and interpret different objects. We are blessed to have eyes, else, we would have been in area of darkness and would have never been able to see any object on the earth. The functioning of eyes can be compared with that of a camera. However, eyes, a beautiful gift of the nature have its own functionality.

To explain how our eyes work, let us first understand various parts of eyes. The eyes consist of cornea which is a transparent outer covering and lies at the front of the eyes. The next part of the eye after the cornea is Iris. In Iris, there is a black hole called pupil through which the light rays pass through. Behind the pupil, there is a lens which passes the light through and at the back of the eye is retina (a thin tissue), where the images that we see are formed.

The process of vision starts when a light ray reflected from an object at which an individual looks, enter eyes through Iris. The light ray passes through pupil which constantly opens and closes to regulate the amount of light that can be passed through. The light rays then pass through lens which modifies itself to focus light on retina. The function of the eye is similar to a camera and the pupil can be compared with the aperture of the camera, in dark conditions, pupil widens whereas, in bright light, the pupil contracts.

If the light is not focusing correctly on the retina, it causes blurred vision. This particular condition is called a refractive error. A refractive error is an optical correction because of which the person is not able to view objects correctly. This results in short sightedness and far sightedness in the person. The refractive errors can be corrected by using spectacles, contact lenses or through surgery.

For complete eyecare solutions, visit Killeen Eyecare Center. You can also book your appointment with us by calling at 254-634-7805

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