The white part of your eyeball is called the sclera, and the black part is known as the pupil. The pupil performs like a camera shutter and controls the amount of light entering the lens and retina located behind it. When you visit an eye...
The human eye is responsible for the sense of sight. The process of seeing requires the eyes to perceive external properties, such as color and movement, and then share the information with the brain. People may have eyes that differ in color,...
Your eyes allow you to navigate the surrounding world. From perceiving an image through your eyes and translating it in the brain, these vital organs have powerful functions that dictate every moment of the waking day. They guide where you go,...
The human eye is often compared with a camera. Both share similar functions, according to Kellogg Eye Center at the University of Michigan. Although many of the parts of the eye and camera are comparable, certain aspects of the mechanisms of each...
To function properly, the eyes require constant nourishment from the vascular system. Red eyes are usually caused by broken blood vessels in the conjuctiva, near the surface of the white of the eye. However, the major blood vessels of the eye are...
The human eye is a spherical organ that processes the images in front of us. The eye is simultaneously delicate and sturdy, composed of many different parts and points that work together to enable your vision. Remember to treat your eyes with care...
The human eye is responsible for vision, though doctors may prescribe eyeglasses or contacts to correct blurry vision. Eye disease may cause serious damage to the eye, including vision loss. However, knowing details about the human eye may help...
The human eye provides us with the ability to visualize the world around us. Light enters the eye through the cornea and excites special neurons on the retina. The brain receives this information and interprets it so that we are aware of what we...
About Astigmatism of the Human Eye Overview Astigmatism is a common eye condition, but severe forms can cause blurred vision. Astigmatism usually coexists with one or more other eye problems, such as myopia or hyperopia. It is easily diagnosed...
A human eye and a camera have many similarities. The Boston University Physics website explains that the eye's pupil and retina are similar to the shutter and film of a camera. The pupil and shutter regulate light and the film and retina record...
Human eye shapes can affect vision. There are several different types of eyeball shapes. The most common are a normal eye, or one that's emmetropic; an elongated or myopic eyeball, which causes nearsightedness; and a shortened or hyperopic...
According to the U.S. Centers for Disease Control and Prevention, although approximately 61 million adults are considered to be at risk of losing their vision, only half of them have seen an eye doctor within the past year. Most people know that...
You are able to see images because light from the environment bounces off the object you are looking at. The light is reflected off of the object you are looking at and is then processed by the eye.
Eye disease can be inherited or caused by injury or infection.. Some are more common as people get older. Diseases of the eye can be debilitating and can cause loss of vision, therefore it is important to get regular eye screenings. Symptoms such...
The eye pupil is the hole in the middle of the iris, the colored part of the eye. Pupils dilate and shrink in response to light; two muscles control pupil size, according to "Fundamentals for Ophthalmic Personnel." Pupillary reactions are...
Pink eye is a commonly used term for conjunctivitis, an inflammation of the conjunctiva, the thin membrane that covers the front of the eyeball and the lower eyelid. Conjunctivitis is very easily spread, especially among children, and can be...
The human eye is a complex organ that transforms light into the things we perceive as reality. Just like every other organ in our bodies, the eye is susceptible to a variety of diseases. According to the American Academy of Ophthalmology, aside...
The term computer vision syndrome (CVS) covers the myriad of visual disturbances that can occur when visually interacting with a computer display. According to Wendy Strouse Watt, O.D., those who spend in excess of 2 hours on the computer a day...
Vitamins help the body perform many functions. Vitamin A is a major player in eye health and vision. In fact, the human eye contains the second most amount of vitamin A in the body, losing out only to the liver. Knowing how much vitamin A is...
Fruits and vegetables are the richest sources of carotenoids, such as lutein, in the diet. Because lutein is often with zeaxanthin, another carotenoid, the two typically list as a combined number, with regard to their content in foods. According...
Seasonal allergies to oak pollen can create intense symptoms that come on suddenly and persist while environmental pollen counts remain high. Both "live oak" species and trees that drop their leaves annually, such as white and red oaks, generate...
Econopred Plus is a brand name of the generically named prednisolone for use in the human eyes. It has synthetic steroid qualities which decrease inflammation and swelling within the eyes. Using this medication prescribed by the ophthalmologist...
The sport of fencing had its debut as an Olympic event in 1896. It has been a part of all Olympic Games since then. In 1896, competition was limited to the disciplines of foil and saber, which are similar weapons, although the saber is lighter....
The human eyes are organs that detect light and convert electro-chemical impulses in the neurons. The eyelid is a thin fold of skin that covers as well as protects the eye. Growing from the eyelid is a row of eyelashes which also serve to protect...
From mild sunburn to death from hyperthermia, the sun poses many risks for those who stay in its rays either too long at once, or for many hours during the course of their lives. Understanding the dangers of exposure to sunlight can help you enjoy...
Throughout your pregnancy your baby will grow and change from a single cell to a complex newborn, capable of independent life. Each week brings new and exciting developments. Week 17 occurs in the second trimester, near the middle of the...
Eyes are the body's camera. In staring at the anatomy of the eye, there are similar features to a camera. The job of the eyes is complex, and are they responsible for providing more information than just vision.
The degradation of one's eyesight is a typical problem associated with aging. For this reason, it becomes especially important to take measures to preserve your eyesight before it is too late. There are many vitamins and minerals that can assist...