What is Cornea?

Cornea is the clear, outermost layer of the eye; covering the front of it and serving as a barrier along with the sclera(White of the eye). As the light first enters the eye here and is mostly refracted or bent by the cornea, playing a critical role for your visual acuity. Alongside refracting the light, cornea is the first in harm’s way for outside effects-physical or chemical-, protecting more delicate parts of the eye.

Corneal transplant surgery is one of the most frequently performed surgery with the highest success rate. Aforementioned surgery, however should not be the first solution for corneal diseases and one’s own cornea is better to be treated. Taking necessary precautions beforehand is the way to go in order not to deal with consequent problems.

What are corneal diseases?

Most  conditions affecting the cornea are either inherited or due to corneal damage. Some most common corneal diseases are stated below:

Keratoconus: the outermost layer of the eye,cornea bulges outward which causes this disease. Hereditary factors are thought to be main conditions for this disease. although scratching or rubbing your eyes  are believed to be another way to catch it, this belief is yet to be proved. The abnormal curvature of the cornea causes vision defects such as uncontrollable astigmatism. With younger patients corneal crosslinking  is the first go-to treatment. If contact lens or ring use fails to slow the progress of the disease a corneal transplant might become necessary.

Dry eye: the cornea contains no blood vessels therefore tears are to be produced to keep its surface lubricated. Otherwise it won’t be nourished well enough to protect against infection. Stinging and burning or as if something is in your eye are among the main symptoms of dry eye, which precede periods of dryness , excess tearing and last redness and pain in the eye. The patient may complain about blurry vision,as well. It is for the patient’s best interest to visit an eye doctor as soon as the symptoms start to appear as the undernourished cornea   loses its role and adequicy requiring prompt interference. Option of soothing eye drops is secondary to the goal of curing the patient to produce his own tears.Wearing contact lenses too long quite possibly makes the eye drier, in which case the cornea layer becomes thinner.

Herpes keratitis: the herpes virus like any part in the body can also cause a viral infection in the eye. The symptoms may include tearing, sensitivity to the light, pain or blurred vision. The infection can be superficial; healing without scarring or could be severe which causes damage in your eye if left untreated.

Allergies: you get allergies when your body reacts to something more than it is expected to. Smoke, pollens and chemical substances are the main instigators of allergies, symptoms of which include itching,tearing, a burning sensation. Eye drops are among the protectives to minimize the effects of allergies.

Corneal ulcer: damage to the cornea due to injuries or trauma may lead to corneal ulcer also called as corneal abrasion that results from contact lenses wear, foreign object, nail inflicting harm on the cornea. Tearing ,redness, a burning sensation and blurry vision are the main symptoms. İt is easier to cure corneal ulcer in its early stages.