An injury inside the eye? Let's learn about a corneal ulcer?

Are your eyes red and watery? Or do you feel like something is stuck in your eye, making it hard to see in the light? These could be signs of a corneal ulcer . Don't worry, let's talk about this simply. This is a serious condition, so it's important to get it checked out as soon as possible.

What is a corneal ulcer?

Simply put, a corneal ulcer is a wound or ulcer that occurs on the cornea, the transparent, dome-like part of the front of your eye. Think of our eyes as the windshield of a car. This cornea is what protects the inside of our eye from things like dust and germs outside. So if there is a scratch or a crack in this "glass," that is called a corneal ulcer.

This is considered a medical emergency. Because if not treated promptly, it can lead to permanent eye damage, vision loss, and sometimes even complete loss of vision. So don't take this lightly, okay?

What are the symptoms of a corneal ulcer?

The symptoms of a corneal ulcer can vary slightly from person to person, but there are some common symptoms:

• Redness or bloodshot eyes .
• Tearing or frequent discharge from the eyes (epiphora) .
• Eye pain: This may be a mild discomfort for some people, like a burning sensation inside the eye. For others, it can be severe pain.
• A feeling of something stuck in the eye, such as a speck of dust or a strand of hair (foreign object sensation).
• Difficulty looking at light (photophobia). To be precise, it is the feeling of pain and discomfort when the eyes are exposed to bright lights or sunlight.
• Blurred vision.
• Swelling or inflammation of the eyelids (blepharitis).
• A white or gray spot appears on the cornea. However, this spot is not always visible to the outside. Even if it is visible, it can sometimes be difficult to identify without special equipment.

If you have one or more of these symptoms, it's best to see an ophthalmologist as soon as possible.

Why do these corneal ulcers form? What are the causes?

There are many possible causes of corneal ulcers. These can be divided into two main categories: infectious causes and noninfectious causes .

Causes caused by infection

These are the most common causes. Infections are when germs enter the body and cause illness. It's the same here.

• Bacteria: The main types of bacteria that infect the cornea are `Pseudomonas` , `Staphylococcus` , and `Streptococcus` . These bacteria can be found in the environment around us. However, if there is a small scratch or wound on our cornea, they can enter through it and cause an infection.
• Imagine you are a contact lens wearer. If you don't clean them properly, or if you wear them while sleeping, you are at a much higher risk of developing bacterial infections.
• Viruses: Some viruses can also cause corneal ulcers. For example, herpes simplex viruses (which cause cold sores and genital herpes) and varicella-zoster virus ( which causes chickenpox and shingles) are the main ones.
• Fungi: Fungal infections can occur if something comes into contact with your eyes, especially when gardening or working with plants or soil. The main types of fungi are Aspergillus and Candida . People with weakened immune systems (immunocompromised) are at higher risk of developing fungal infections because their bodies are less able to fight off these infections.
• Parasites: Acanthamoeba is the most common parasitic infection that causes corneal ulcers. People who wear contact lenses and swim (in swimming pools or other bodies of water) are at a higher risk. This is because Acanthamoeba parasites can survive in low chlorine levels (such as in poorly cleaned swimming pools). They can also be found in tap water. This is why it is recommended that you never wash or store your contact lenses in tap water.

Other non-infectious causes

Corneal ulcers can develop even without an infection. Here are some factors that can contribute to this:

• Eye injuries: Burns, corneal abrasions , lacerations , and puncture wounds can lead to ulcers if they don't heal properly. These injuries can also increase the risk of eye infections.
• Exposure: If you have lagophthalmos , a condition where you can't close your eyes completely, your cornea can be damaged because it's constantly exposed to the sun. Exposure to extreme heat or cold can also damage your cornea.
• Very dry eyes: Eyes can become extremely dry due to weather conditions, eye disease, or a combination of both. This can damage the cornea and cause ulcers.
• Toxic effects: These conditions can occur if certain toxic chemicals get into the eyes, or in rare cases, due to certain medications you take.
• Immune conditions: Sometimes, a malfunction in our own immune system can cause inflammation inside the eye. This inflammation weakens the corneal tissue and increases the risk of developing ulcers.

Who is at higher risk of developing this condition?

Anyone can develop corneal ulcers, but some people are at higher risk:

• People who wear contact lenses frequently, especially those who wear them for long periods of time (the risk is even higher if they are worn while sleeping, if they are worn while bathing, or if they are not cleaned properly).
• People who currently have or have previously had a herpes simplex virus infection or varicella-zoster virus infection .
• For those with dry eyes.
• For people with medical conditions that make it difficult to close their eyes completely (for example, conditions such as `Bell's palsy`, which causes facial nerve dysfunction, or diseases such as `Graves' disease`, which causes the eyes to protrude).
• For those who are currently using or have recently used eye drops containing steroids .
• For those who have a corneal injury or burn .
• For people with type 2 diabetes .
• For those who have had previous eye surgery .
• For those with other eye diseases, especially corneal diseases .

What are the possible complications of corneal ulcers?

If a corneal ulcer is not treated properly, various complications can occur. These include:

• Astigmatism or other vision changes.
• Cataracts .
• Endophthalmitis, a serious infection inside the eye.
• Glaucoma condition.
• Corneal perforation or scarring.
• Recurrent corneal erosions (RCEs) .
• Loss of vision.

That's why we say, if you have symptoms like these, see a doctor immediately.

How do you accurately identify a corneal ulcer?

To determine if you have a corneal ulcer, an ophthalmologist or other healthcare provider will perform an eye exam . This is more focused on the cornea than a general eye exam.

One of the main tools they use for this is a slit lamp exam . This allows them to examine the cornea very closely and up close.

Sometimes, your doctor may take a small sample (swab culture) from your eye and send it to a lab to test it. This means taking a small amount of the discharge from your eye and testing it for germs. This can help determine the exact type of infection that is causing the sore. In cases that don't respond well to treatment, your doctor may also recommend a corneal biopsy . This means taking a small piece of corneal tissue and testing it.

Your eye specialist will tell you more about these tests. They will also explain how they are done, why they are important, and whether there are any side effects to expect after them.

How do you treat corneal ulcers? Can this be cured completely?

Because there are many causes of corneal ulcers, there are many treatments. Some treatments are specific, meaning they only work for one cause. Other treatments are general, meaning they help control the symptoms caused by an ulcer.

Here are some of the most commonly used treatments:

• Medications:
• Antibiotics are given for ulcers caused by bacterial infections. There are also medications that are effective for ulcers caused by viruses, fungi, and parasites.
• Medications such as corticosteroids are usually given to reduce the symptoms of corneal ulcers. These reduce inflammation.
• Your doctor may also prescribe nonsteroidal anti-inflammatory drugs (NSAIDs) , such as ibuprofen (Advil® or Motrin®). These can help reduce pain and swelling.
• Your ophthalmologist will tell you more about these medications and how to use them (drops, ointments, tablets).
• Scleral lenses or bandage contact lenses: These are special lenses that are placed on the eye. They protect the cornea from further damage and give it time to heal.
• Tarsorrhaphy: This treatment involves keeping the eye closed for a longer period of time. To do this, the doctor may sew the eyelids together or inject a medication such as onabotulinumtoxinA (Botox®) to temporarily disable the muscles that control the eyelid. When the eye is closed, the cornea has a better environment to heal.
• Surgery: If corneal ulcers do not heal with medication, surgery may be necessary. In severe cases, a corneal transplant may even be necessary.

Depending on your condition, other treatments may be necessary. Your eye specialist can best advise you on which treatments are best for you and what side effects they may cause.

Can corneal ulcers be prevented?

Although corneal ulcers cannot be prevented 100% of the time, there are many things we can do to reduce our risk. Some of them include:

• Don't sleep with your contact lenses on. Sleeping with your contact lenses on is a major cause of serious corneal ulcers.
• Do not use contact lenses past their expiration date. The longer you wear soft contact lenses, the more likely they are to grow bacteria. Daily contact lenses are the safest.
• Wash your hands often or use sanitizer. If your hands look or feel dirty, wash them with soap and water. Or, use an alcohol-based sanitizer (at least 60% alcohol).
• Eye protection. The best way to prevent eye injuries is to protect your eyes. Wear a pair of safety glasses that are appropriate for the job you are doing.
• Never share anything that comes into contact with your eyes with others. This includes things like makeup, face washes, and contact lens cases.

How long does it take for a corneal ulcer to heal? What are the prospects for recovery?

Depending on the cause of a corneal ulcer, its condition can vary greatly. This means that the time it takes to heal and how well it heals can vary. Your ophthalmologist can best explain this to you based on your situation.

Some of the main factors that affect the prospect of recovery are:

• Size of the ulcer: Larger ulcers usually take longer to heal, and the results may be less effective.
• Cause: Ulcers that develop for some reasons are difficult to treat and heal.
• Location of the forest: Where in the Cornea is the forest also affects the results.
• Response to treatment: If the patient responds well to treatment, the prognosis for recovery is usually good.

The recovery time depends on various factors, so only your doctor can tell you exactly how long it will take based on your condition.

How do I take care of myself?

If you have a corneal ulcer, the most important things you can do are:

• Follow your doctor's treatment instructions exactly. That means everything from how to take your medication, how to use your eye, and how to protect yourself.
• Be sure to go to the doctor on the days he tells you to come. These follow-up visits are the only way the doctor can see how the ulcer is healing and change the treatment if necessary.
• Talk to your eye doctor if you have any concerns. If you develop new symptoms, have questions about how to take your medication, feel like your treatment is not helping, or have problems with side effects from your treatment, tell your doctor . They can give you ways to reduce the impact of your symptoms or change your treatment to stop the side effects.

When should I see a doctor? / When should I seek medical advice?

Your eye specialist will tell you what symptoms you should talk to them about or seek medical advice if you have them. These usually include things like:

• If symptoms continue to worsen despite treatment.
• If you have increased light sensitivity , especially if it is severe enough to prevent you from performing daily activities.
• If your vision becomes blurred or your vision decreases.
• If you have severe eye pain .
• If there is excessive discharge from the eye .

What should I ask my ophthalmologist?

You can ask your eye specialist questions like:

• What is the cause of my corneal ulcer?
• What treatments do you recommend?
• What can I do to help my eyes heal?
• What symptoms should I call you about?
• What symptoms should I seek emergency medical attention for?
• What are the prospects for recovery based on my condition? What can I do to achieve a good outcome?

How does wearing contact lenses increase the risk of developing a corneal ulcer?

When you wear contact lenses for a long time, the amount of oxygen that reaches your eyes decreases. Also, when you put the lenses in your eye, bacteria can enter the lens from your fingers or from improperly cleaned solutions and get trapped under the lens. These factors increase the risk of infection and can lead to a corneal ulcer.

A person who wears contact lenses is about 10 times more likely to develop a corneal ulcer than someone who doesn't wear them. A person who sleeps with contact lenses in is about 100 times more likely to develop an ulcer than someone who doesn't wear them! Imagine how dangerous that is.

What is the difference between a corneal abrasion and a corneal ulcer?

• A corneal abrasion is a scratch or crack in your cornea. These types of corneal injuries usually heal on their own.
• A corneal ulcer is an open sore on your cornea. A corneal ulcer can be caused by infection, dry eyes, and other conditions. Simply put, a scratch is a superficial injury, while an ulcer is a deeper wound with tissue loss.

What is the difference between a corneal ulcer and keratitis?

These two eye conditions are closely related.

• A corneal ulcer is an open wound – a loss of corneal tissue – that often occurs as a result of an eye infection.
• Keratitis is a general term for a group of conditions that cause inflammation of your cornea. Eye infections, injuries, and wearing contact lenses for too long — some of the same things that can cause corneal ulcers — can also cause keratitis. If keratitis becomes severe, it can lead to a corneal ulcer.

Both of these conditions can cause vision loss.

Finally, things to remember (Take-Home Message)

A corneal ulcer is a vision-threatening emergency. Even a minor injury to the eye can cause a corneal ulcer. If you think you have symptoms of a corneal ulcer, see your eye doctor right away. They will examine your eye, make a diagnosis, and begin treatment.

If you wear contact lenses, make sure you know how to properly insert, clean, and store them. Your eye care team can teach you these proper techniques and answer any other questions you may have.

Remember, your eyes are very valuable. So, take care of them. Don't take anything for granted, even the smallest ones!

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