The cornea is one of the crucial elements of the human eye. Cornea helps in focusing the eye and also close the eyelids. A healthy eye is a result of having a healthy cornea. An ordered group of cells and proteins that have the required nerve endings together form a cornea. The cornea is a transparent part of the eye that covers the pupil, iris and other interior parts of the eye. The transparency of the cornea permits the refraction of light in the right amount. Lack of transparency results in blurring of vision.

Here are a few conditions that have an impact on the cornea.


Allergies have almost become a common part of life. Common eye allergies are a result of dust, mold or outdoor elements like pollen and smoke. A sensation of itching or burning is felt when a foreign body enters the eye. Allergies though are temporary can cause a lot of discomforts. To relieve the feeling of itching and swelling, one should apply a cool compress on the eyes. Remember that systematic antihistamines have limited effect on allergies.

Dry eye

Most of the people have experienced dry eye. At times, for many of those who have gone through this, the experience has been a painful one. Tears play an important role when it comes to eye health. Tears remove dirt and other irritants. Tears also keep the surface of the eyes clean and moist. They prevent irritation and even infection for the eyes.

The time from when the eyes do not produce enough tears of tears of poor quality when it comes to eye maintenance, it becomes a painful experience. Allergies, excessive usage of contact lenses and at times aging are some of the common causes of dry eye. Having a hazy vision, red eyes, burning or stinging sensation in the eye are some of the symptoms of dry eye.

Treatments for dry eye include eye drops, warm compresses or in severe cases an eyelid surgery.


Infections can happen to both the eyes or even any part of the eye. The cornea is unique as it does not contain blood as compared to other tissues. Hence the cornea lacks the ability to tackle infections. Redness of eyes, itching, swelling or pain are some of the common symptoms of infections.
The treatment for infections depends on the type of infections. However, common treatment includes the use of eye drops, creams, and antibiotics. In the case of any severe infection, one should visit the eye specialist as soon as possible to avoid further damage to eyes or even in the case, loss of vision.


Shingles occur as a result of the common chickenpox virus. When someone comes in contact with this virus, it initially remains inactive. However, if it is reactivated, it produces rashes which are called as shingles. High temperature, redness of eyes, foggy vision are some of the symptoms of shingles.

Treatment of oral anti-viral treatment is said to lessen the effect of shingles.

Corneal Dystrophies

A total 20 types of corneal dystrophies are present, and each of them affects different parts of the cornea. This leads to the change in shape and rise in the formation of cloud like material in the eye.

Symptoms of dystrophy vary from causing severe visual impairment to no signs of distress at all.

With all these conditions that have an impact on the cornea, it is necessary to be cautious and active about eye care to avoid an irrecoverable damage.