EYES

                  Eyes are one of the most important channels we use to gather information and make
sense of the world around us. We also use our eyes to express how we feel knowingly or
unwittingly in a way that is often more powerful than spoken words.
Eyes are the organ of sight, in vertebrates typically one of a pair of spherical bodies contained
in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or
sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved
membrane, or cornea, and in the center of which is an opening, or pupil, through which light
passes to the retina. The human eye is one of nature's wonders and functions like a photo
camera. Only that is much more complex.
                  Eyes are composed of more than 2 million parts. According to an observation the average
person blink his eyes 12 times in a minute. The eyeball of a human weighs approximately 28
grams. By the age of 7 years old our eyes are fully developed and are physiologically the same
as adult’s eyes. The space between your eyebrows is called the Glabella. Eyes contribute towards
85% of your total knowledge.
                  Carrots, loaded with beta carotene are especially helpful in maintaining healthy eyes.
Goggles or something other should be wear to protect eyes while working with chemicals or any
place with harmful airborne particulates.

Eyes

 

HOW DO SPECTACLES HELP TO CORRECT EYESIGHT?

    As you know our eyes work like a camera. The camera film of our eye is the Retina, a thin coating of millions of tiny nerve cells called rods and cones. In normal eyes, the picture is formed exactly on the retina. In the eyes of people who are short-sighted, the picture is formed behind the retina in the eyes of people with long-sight. Short-sighted people can't see things clearly far away fom them. Elderly people often cannot see clearly objects that are close to them. Wearing spectacles can help people with these eye troubles.
           Short-sighted people are povided spectacles with concave glasses that help to focus the image on the retina instead of in front of it. Long-sighted people are given convex glasses that help to bring the image forward on the retina instead of behind it. Nowadays contact lenses are also used to correct vision.