Protect your eyesight! What you need to know about corneal disease

It goes without saying how precious your eyes are to you. Sometimes you may have experienced things like eye pain, blurred vision, or difficulty seeing outside. These may be due to some problem with the cornea. So, let's not panic and be a little aware of this. Today, let's talk about this Corneal Disease.

What is Corneal Disease?

Simply put, 'Corneal Disease' refers to various diseases that affect the cornea, the front of your eye. This cornea is like a transparent window in front of our eyes. Think of it like the screen guard on your phone. It protects the eyes from dust and dirt coming from outside. Also, this cornea is very important for us to see clearly . Just like the lens of a camera, this part focuses light to enter the eye.

So, when a corneal disease occurs, both of these functions can be disrupted. That is, both the protection of the eye and the ability to see clearly can be affected. This can cause eye pain and make it difficult to do daily activities. However, even though some corneal diseases do not show major symptoms, it is very important to treat them. Because, if left untreated, sometimes vision can become impaired. Therefore, if you have eye pain, blurred vision, or difficulty looking outside, see an ophthalmologist as soon as possible. Sometimes there are no symptoms, but it is still a good idea to have your eyes checked regularly. Your doctor will tell you how often you should have your eyes checked, based on your age and other medical conditions.

What are the most common diseases of the cornea?

Diseases that affect the cornea can be divided into three main categories. Let's take a look at what they are.

1. Keratitis - Inflammation of the cornea

This is when your cornea becomes swollen, or inflamed. Think of it like a cut on the skin that becomes red, swollen, and painful. This can be infectious , meaning it's caused by a germ, or noninfectious , meaning it's caused by something else.

• Infectious Keratitis: This is also called a Corneal Ulcer . It is like a small ulcer forming inside the eye. This is most often caused by bacteria . But sometimes it can also be caused by viruses , fungi , or parasites . It is like when our eye gets a small wound, or when we touch our eye with an unclean hand and germs get into it.
• Noninfectious Keratitis: This can occur for many reasons. It can be caused by injuries to the eye (for example, when something hits the eye or rubs the eye too hard), dry eye conditions, and other conditions that cause dry eyes.

2. Corneal Ectasia - Change in the shape of the cornea

This is not a single disease, but a group of diseases. What happens is that the shape of the cornea changes, it thins and bulges forward . It's like one side of a balloon weakening and bulging forward.

• The most common disease in this group is Keratoconus .
• Sometimes, corneal ectasia can occur as a complication after eye surgery, such as LASIK eye surgery , or after a corneal transplant .
• Although this may not cause any major symptoms at first, it gradually starts to affect your vision. If not treated properly, it can even lead to serious conditions like corneal hydrops , which is when the cornea fills with water and swells.

3. Corneal Dystrophy - Depositions in the cornea

This is not a single disease, but a group of diseases caused by genetic factors. This is caused by the abnormal deposition of proteins, fluids, or other substances in one or more layers of the cornea.

• Some types of corneal dystrophy are progressive .
• And some types also affect your vision.
• Fuchs' Dystrophy is the most common type of this disease.
• In addition, there are other types such as Epithelial Basement Membrane Dystrophy (formerly called map-dot-fingerprint dystrophy), Lattice Corneal Dystrophy, and Granular Corneal Dystrophy . These are a bit complicated, but your doctor will explain them to you.

Other conditions affecting the cornea

In addition to those three main categories, there are several other conditions that can damage the cornea and cause symptoms:

• Bullous Keratopathy: This is a condition where the surface of the cornea becomes swollen and blisters form. This condition can occur after eye surgery or due to corneal dystrophy. Symptoms include blurred vision in the morning and difficulty seeing outside.
• Corneal Abrasion: This is an open wound on the surface of the cornea, similar to a skin scrape. This can cause blurred vision, eye pain, and watery eyes. It is most often caused by an accident, such as scratching the eye with a fingernail. It can also happen to people with severe dry eye disease.
• Herpetic Eye Disease: A painful condition that occurs when the herpes virus affects the eye.
• Iridocorneal Endothelial Syndrome (ICE): This is a rare condition in which the cornea swells and the pressure inside the eye (intraocular pressure) increases.
• Keratoconjunctivitis: This involves inflammation of the cornea, the thin membrane covering the white of the eye (conjunctiva), and the membrane lining the inside of the eyelid.
• Pterygium: This is what many people call a "fleshball." A fleshy growth on the white of the eye that grows toward the cornea. Rarely, it can cause scarring.

What are the symptoms of corneal diseases?

The symptoms of corneal diseases can vary from person to person. They also vary depending on the type of disease. Check to see if you have any of these symptoms:

• Eye pain: This can range from a mild ache to severe pain.
• Sensitivity to light: An inability to open the eyes when exposed to sunlight or bright lights.
• A feeling of something in the eye: as if a grain of sand had gotten into the eye.
• Blurry vision.
• Vision gradually worsens over time.
• Red or bloodshot eyes.
• Watery eyes.
• Pus or discharge from the eyes.

The important thing is that these symptoms can also be symptoms of other eye diseases. Also, some corneal diseases, especially in the early stages, may not show any symptoms at all. That's why it's important to see an eye specialist as soon as possible if you experience anything like this.

What are the causes of corneal diseases?

Several factors can contribute to the development of corneal diseases:

• Infection: This means that it is caused by germs such as bacteria, viruses, and fungi.
• Injury or trauma to your eye.
• Genetic mutations: These are things that are inherited.
• Other eye conditions.
• Certain medical conditions.

Who is at higher risk of developing these corneal diseases?

Some people are more likely to develop these corneal diseases. See if any of these apply to you:

• If you have a condition like Connective Tissue Disease .
• If your immune system is weak, that is, if your body's ability to fight disease is low.
• If you rub your eyes frequently . Sometimes people with allergies like hay fever or skin conditions like eczema tend to scratch their eyes a lot. Then they rub their eyes a lot.
• If you have had any eye surgery .
• This risk is even higher if you wear contact lenses , especially if you don't clean them properly and wear them for longer than they should . Some people sleep with them on at night, which is not good at all.

How do you find out if you have corneal disease?

Ophthalmologists are the ones who diagnose these corneal diseases. They do a thorough eye exam of your eyes. They do many of the usual tests. One of them is the slit lamp exam . This allows them to get a good look at the health of your cornea and other parts of your eye.

Your doctor may also do a fluorescein eye stain test . This involves putting a harmless liquid dye into your eye and holding it up to a light. This dye allows your doctor to see even small scratches or damage to your cornea.

After these tests, if there are any problems, the doctor will tell you about them. He will also explain to you what to do next and how to refer you for treatment.

What are the treatments for corneal diseases?

The best thing is that there are treatments for most of these corneal diseases. However, the treatment method varies depending on the disease you have. Your ophthalmologist will choose the right treatment for you. Here are the different treatment methods available:

• Medicines such as eye drops and ointments .
• Prescription eyeglasses or contact lenses .
• Laser procedures : For example, there is a method called phototherapeutic keratectomy . This involves removing some tissue from the cornea and changing its shape.
• Corneal Transplant surgery : In this, the damaged cornea is removed and replaced with a healthy cornea.
• Keratoprosthesis : In some cases, it is necessary to replace the cornea with an artificial one.

Your ophthalmologist will explain these treatments to you thoroughly and create a treatment plan tailored to your needs, so there's nothing to be afraid of.

What happens if there is corneal disease?

If you catch the disease early and start treatment , you can manage your condition better. If left untreated, some corneal diseases can lead to complete vision loss . That's why it's important to have regular eye exams and to tell your doctor right away if you notice any new or changing symptoms. Your doctor will tell you what to expect based on your condition.

Can corneal diseases be prevented?

Not all corneal diseases can be prevented, especially those that are caused by genetic factors. However, there are things you can do to reduce your risk of developing some corneal diseases. Consider these:

• Wear safety goggles when working with machinery or chemicals. This is especially important when working in the garden or using tools like a hammer, drill, or saw.
• Wear protective eyewear when playing certain sports.
• If you wear contact lenses, use them exactly as your doctor tells you to. Be sure to clean and store them properly. Even if the contact lens package says you can sleep in them at night, it's best not to do so.
• Do not share eye makeup, contact lens solution, or other items with others.
• If something gets in your eye, don't try to remove it yourself, see a doctor.
• If anyone in your family has corneal disease, tell your doctor about it. This information can help detect some conditions early.

When should I see the doctor?

Regular eye exams are essential to the health of your eyes. Your eye doctor will tell you how often you should have an eye exam. Most adults need an eye exam every year or two . If you have certain medical conditions or risk factors, you may need to have your eyes checked more often.

When should you seek emergency treatment?

In such a case, seek medical advice immediately :

• If you have severe eye pain .
• If you experience a sudden change in your vision or severe blurred vision .
• If something gets into the eye.
• If you have an eye injury or accident .

What questions should I ask my doctor?

To learn more about corneal diseases (and how they affect you), you can ask your ophthalmologist questions like these:

• Am I at risk of developing corneal diseases?
• Do I have some kind of corneal disease? If so, what type is it and how severe is it?
• Will I need treatment? If so, what kind of treatment?
• What can I do to manage symptoms at home?
• What symptoms should I see you for, or go to emergency care?
• How will my situation progress?
• Would you recommend genetic testing for me or anyone in my family?

Corneal disease is a general term for a group of different diseases that affect the cornea. While some of the names may sound scary, remember that there are many treatments that can help protect your vision and restore eye health. Talk to your eye doctor about what to expect going forward.

Take-Home Message

So, Corneal Disease is a group of conditions that can affect the eyes. The most important thing is that if you notice any changes in your eyes, such as pain or blurred vision, do not ignore it and see an ophthalmologist immediately. If the disease is detected early and treated properly, you can protect your precious vision. Also, it is very important to have your eyes checked regularly, as doctors say. Take care of your eyes!

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