It is said that Eyes are the window to the soul. In the specific cases, the eyes are also window to the overall health of the eye and normal vision. There are many poetic efforts and myths to associate it with the ailments of heart. In scientific world, the pigments and structures of the eye can determine the health as well as future course of action of many diseases.
Eye Color
Light eyes
Whether your eyes are blue, green or gray, you may be at a higher risk of skin cancer than those with darker eyes, Ruth Williams, MD says Daily Health. You are also at a greater risk of developing age-related macular degeneration, one of the most common causes of vision loss. However, the risk of cataracts and vitiligo is reduced.
Dark eyes
If your eyes are brown or hazel, research suggests that you are more likely to experience cataracts later in your life than those with brighter eyes. You are also more likely to develop vitiligo, a condition in which some of your melanin cells stop functioning properly that leaves you with pigment less skin patches. However, you are at a lower risk for developing skin cancer and macular degeneration.
Color change
In some cases, a sudden change in eye color may signal a serious health problem. If you suddenly have red eyes, for example, it is a sign of irritation, infection or allergies. And if the whites of your eyes turn yellow, it’s a common indication of jaundice, which means you need medical attention as soon as possible.
Eyes Shape:
Not the whole shape but certain features if the eyes do indicate that the person is at more risk of certain diseased than the one with normal features
Pupil dilation
Though it is common that one out of every five people possess mismatched pupils but their drastic dilations indicate a health risk. In most of the cases, mismatched pupils are an indication of nervous system problems, strokes and different infections.
Elongated eyeball
Commonly known as myopic eye, it is characterized by myopic elongated eyeball. In this type of eye, the distance between retina and lens is longer than the normal eye, that force the image to come into focus before reaching the retina. As a result, the vision becomes blurry and it is corrected with the help of physician.
Short eyeball
Opposite to the myopic eye, it is known as hyperopia and characterized by the short eye ball. In this type, the distance between lens and retina becomes short and the image gets focused behind the retina. This condition is known as far-sightedness and cause distant objects to be clear while the closer ones blurry. Adjustments of lens is advised in this case scenario.
The Cornea
The vision also depends on the cornea of the eye which is a static part of the eye. If by any chance, the cornea becomes weak, it becomes unable to maintain the round structure causing in bulging outward or downward, providing a shape of cone. It results in refractive error as it is unable to bend the incoming light in perfect direction distorting the image formed at retina. Common corneal irregularities include astigmatism and keratoconus.