The eyes are described as the windows of the soul. Along with the many things that our eyes enable us to do which include the ability to perform many different daily activities of a visual nature, our eyes also enable us to communicate with others in a non-verbal manner. For example, there are certain expressions that are conveyed by our eyes that indicate various feeling associated with joy, happiness and sadness. A scientific research study also disclosed that people who maintained good eye contact with others were perceived as confident, attractive and positive. Here are some interesting facts about the eyes that you will find amazing and a little bit crazy. The first blue eyed person experienced some 6,000 -10,000 years ago. Before that particular period of time every one had brown eyes. A psychologist once worn glasses that reflected images so that these images were seen upside down. After 8 days his brain corrected the images thereby allowing him to see them right side up in a normal manner.
The eyes consist of 3 different layers called the sclerotic, the choroid and the retina. Inside of the choroid are various parts of the eyes which include numerous tiny blood vessels, the pupil, the ciliary muscles as well as the crystalline lens. The part of the eyes located behind the crystalline lens is called the iris. The small black circle in the center of the eyes is called the pupil. The iris can be described as a disc of colored tissue that gives the eyes its color. Therefore, the iris is the colored part of the eyes. When the iris is exposed to bright light the iris expands causing the pupil to become smaller. Therefore, the main function of the iris in eye anatomy is to control the amount of light that enters the eyes. This part of the eyes is also responsible for sharpening the image that falls on the retina of the eye.
There are 2 elaborate sets of muscles that surround the iris itself. The first set of deficicate muscle fibers that resemble spokes are responsible for pulling the pupil open. This biological action happens when the eyes are exposed to dark light situations. The second set of ring likeicate muscle fibers are responsible for closing the pupil. This biological action takes place when the eyes are exposed to bright light. These muscles ensure that the image cast on the retina is clear and sharp at all distances. Therefore, one of the other primary functions of the iris is the fact that it plays a role in the process of accommodation which is defined as the action of the muscles in the eyes that enable us to see near and distant objects clearly.
It is a fascinating subject to explore the functions of the different parts of the visual system in eye anatomy. Each individual part of the eyes has a unique function and works together collectively to help us see clearly. To keep our precious eyes healthy we need to give them the proper care so that the visual system can serve us well. Eye exercises enable our visual system to function efficiently and more naturally, thereby ensuring that the different parts of our eyes function at optimal levels. Ultimately, these eye exercise techniques help us to do the things that we need to do to increase our vision health for years to come.