Recurrent Corneal Erosion

Recurrent corneal erosion (RCE) is a painful eye condition where the outer layer of your eye's clear front surface, called the cornea, repeatedly peels away. This often happens after a previous eye injury or due to an underlying corneal problem, leading to sudden pain, light sensitivity, and blurry vision, especially upon waking.

What is Recurrent Corneal Erosion?

Recurrent corneal erosion (RCE) is a condition where the outermost layer of your eye's clear front surface, the cornea (epithelium), repeatedly detaches from the layer beneath it. This detachment causes sudden, often severe eye pain and other symptoms. It usually occurs because the outer layer does not properly stick to the underlying tissue.

Your cornea is the clear, dome-shaped front part of your eye that helps focus light. It has several layers. The very top layer, called the epithelium, acts as a protective barrier. Below this is Bowman's layer, and then the stroma, which is the thickest part of the cornea. In recurrent corneal erosion, the epithelium does not firmly attach to the Bowman's layer. This weak attachment makes the outer layer prone to tearing or peeling off, often spontaneously. This can be compared to a blister forming on your skin, but on the delicate surface of your eye. When the epithelium detaches, it exposes sensitive nerve endings in the cornea. This exposure causes significant pain, a feeling that something is in your eye, and other uncomfortable symptoms. The condition is called "recurrent" because these painful episodes can happen repeatedly over time. These erosions can range from very small, affecting only a few cells, to larger areas. Even small erosions can cause intense discomfort because the cornea is one of the most sensitive parts of your body.

Symptoms

Symptoms of recurrent corneal erosion often appear suddenly, most commonly upon waking or opening your eyes. You might experience sharp, severe eye pain, a feeling like something is stuck in your eye, increased sensitivity to light (photophobia), and excessive tearing. Your vision may also become blurry during an episode.

The pain associated with recurrent corneal erosion can be quite intense and debilitating. It often feels like a sudden, sharp, or stabbing sensation in the affected eye. This pain is typically worse when you first open your eyes in the morning, as the eyelid can pull on the loosely attached corneal tissue. Beyond pain, many people describe a persistent foreign body sensation, as if there is grit, sand, or an eyelash in their eye that they cannot remove. This feeling can be constant during an episode. The eye may also become noticeably red and watery. Increased sensitivity to light, known as photophobia, is another common symptom. Bright lights can feel painful or uncomfortable, causing you to squint or seek darker environments. Vision can become temporarily blurry or hazy, especially if the erosion is in the central part of the cornea. These symptoms can last for several hours to a few days before the cornea begins to heal.

Causes & risk factors

Recurrent corneal erosion usually develops after a previous injury to the cornea, such as a scratch or abrasion, which didn't heal properly. Certain inherited eye conditions called corneal dystrophies, like epithelial basement membrane dystrophy (EBMD), are also common risk factors. These conditions weaken the bond between the cornea's layers.

The most common cause of recurrent corneal erosion is a prior corneal injury. If you've had a scratch, abrasion, or other trauma to your cornea, especially one that was deep or involved the basement membrane, the outer layer may not reattach as strongly as it should. This makes it vulnerable to future detachments. Even minor injuries can sometimes lead to RCE. Another significant risk factor is having certain inherited corneal dystrophies. These are genetic conditions that affect the structure of the cornea. Epithelial basement membrane dystrophy (EBMD), sometimes called map-dot-fingerprint dystrophy, is a common example. In EBMD, the cells of the corneal epithelium produce an abnormal basement membrane, which is the "glue" that holds the outer layer to the rest of the cornea. This abnormal structure prevents a strong attachment. Other less common corneal dystrophies, such as Reis-Bucklers, lattice, or granular dystrophies, can also increase the risk. While dry eye syndrome is not a direct cause, it can worsen the symptoms and make the cornea more susceptible to erosion by reducing the protective tear film. People with chronic dry eyes may experience more frequent or severe episodes.

How it's diagnosed

A doctor diagnoses recurrent corneal erosion through a comprehensive eye examination. This typically involves using a special microscope called a slit lamp to closely inspect your cornea. They may also apply a special dye, fluorescein, to your eye, which highlights any areas where the corneal surface has been damaged or detached, making them visible.

When you visit an eye doctor with symptoms suggestive of recurrent corneal erosion, they will first ask about your medical history and the nature of your symptoms, including when they started and how often they occur. This information helps them understand the pattern of your eye discomfort. The primary diagnostic tool is a slit lamp examination. This instrument allows the doctor to view your eye with high magnification and a bright light, examining the different layers of the cornea in detail. They can look for signs of previous injury, abnormal corneal tissue, or areas where the epithelium is loosely attached. To make erosions more visible, the doctor will often put a few drops of a yellow-orange dye called fluorescein into your eye. This dye spreads over the surface of the cornea. If there is an erosion or a detached area, the dye will collect in that spot, making it glow under a blue light from the slit lamp. This allows the doctor to clearly see the size and location of any corneal damage.

Treatment options

Treatment for recurrent corneal erosion aims to relieve pain, promote healing, and prevent future episodes. Initial treatments often include lubricating eye drops or ointments, a bandage contact lens, and oral pain relievers. For recurring cases, options may expand to hypertonic saline drops, debridement, or laser procedures like phototherapeutic keratectomy (PTK).

During an acute episode of recurrent corneal erosion, the immediate goal is to manage pain and help the cornea heal. Your doctor may prescribe preservative-free lubricating eye drops or thick ointments to keep the eye moist and reduce friction from blinking. A soft bandage contact lens can also be placed on the eye. This acts like a protective shield, reducing pain and allowing the epithelium to reattach more smoothly. Oral pain medications can help manage discomfort. To prevent future erosions, several long-term treatments are available. Hypertonic saline (sodium chloride) drops or ointments are often recommended. These solutions help draw excess fluid out of the cornea, which can strengthen the adhesion of the epithelial layer. They are typically used for several months. If conservative treatments are not effective, your doctor might suggest minor procedures. Epithelial debridement involves gently removing the loose or unhealthy epithelial tissue to allow new, healthier cells to grow and reattach more firmly. Another option is anterior stromal puncture (ASP), where a fine needle is used to create tiny punctures on the corneal surface. These small scars help the epithelium adhere better. For more persistent or severe cases, laser treatment called phototherapeutic keratectomy (PTK) may be considered. An excimer laser is used to remove a very thin layer of the corneal surface, promoting stronger adhesion of the new epithelial cells. Another technique, diamond burr polishing, uses a rotating burr to smooth the corneal surface, also encouraging better reattachment. Your doctor will discuss the best approach based on your specific condition.

Recovery & outlook

Recovery from an acute recurrent corneal erosion episode usually takes a few days to a week, with symptoms gradually improving. The outlook is generally good with proper treatment and preventative measures, though recurrence is common if the underlying issue isn't addressed. Many people find relief and can manage their condition effectively with ongoing care.

After an acute episode of recurrent corneal erosion, the immediate pain and discomfort typically lessen within a few days as the corneal surface begins to heal. Full healing of the epithelial layer can take about a week. During this time, it's important to follow your doctor's instructions, which may include using prescribed eye drops, ointments, or wearing a bandage contact lens. The challenge with recurrent corneal erosion is its tendency to recur. Without preventative treatment, episodes can happen again, sometimes weeks or months later. The goal of long-term management is to strengthen the adhesion of the corneal epithelium and reduce the frequency and severity of these recurrences. This often involves consistent use of lubricating drops or hypertonic saline, even when you are not experiencing symptoms. For many people, a combination of medical treatments and, if necessary, minor procedures can significantly reduce or eliminate recurrent episodes. While some individuals may experience chronic issues, most can achieve good control over their condition. Regular follow-up appointments with your eye doctor are important to monitor your progress and adjust treatment as needed.

When to see a doctor

You should see a doctor immediately if you experience sudden, severe eye pain, especially if it's accompanied by significant vision changes, worsening redness, or discharge from your eye. These symptoms could indicate a new corneal erosion or a more serious eye infection. Prompt medical attention is crucial to prevent complications and preserve your vision.

While recurrent corneal erosion is often a chronic condition, certain symptoms warrant immediate medical attention. If you experience a sudden onset of intense eye pain that does not improve with your usual comfort measures, or if the pain becomes unbearable, contact your eye doctor right away. Any noticeable changes in your vision, such as a sudden decrease in clarity, new blurriness, or seeing halos around lights, should also prompt an urgent visit. Worsening redness in the eye, increased light sensitivity, or any yellow or green discharge could be signs of an infection, which is a serious complication of corneal erosions. Even if you have a history of recurrent corneal erosion, new or significantly different symptoms should always be evaluated by a healthcare professional. Do not try to self-diagnose or treat severe symptoms at home. Early diagnosis and treatment of complications can help prevent long-term damage to your eye and preserve your vision.

Frequently asked questions

Can recurrent corneal erosion lead to permanent vision loss?

While recurrent corneal erosion is painful and can temporarily blur vision during an episode, it rarely causes permanent vision loss. However, repeated erosions or complications like infection, if left untreated, could potentially lead to scarring that might affect vision. Prompt treatment and management are key to preventing such issues.

How long does it take for a corneal erosion to heal?

A typical corneal erosion usually starts to heal within a few days, with the outer layer of the cornea (epithelium) regenerating. Complete healing of the surface often takes about a week. However, the underlying adhesion problem that caused the erosion may persist, leading to future recurrences if not managed.

Are there any home remedies for recurrent corneal erosion?

While some comfort measures like applying a cool compress or avoiding eye rubbing can help, there are no effective home remedies to treat or prevent recurrent corneal erosion. It's crucial to follow your eye doctor's prescribed treatments, such as lubricating drops or hypertonic saline, to promote healing and reduce future episodes.

Can diet or lifestyle changes help prevent RCE?

There is no strong evidence to suggest that specific diet or lifestyle changes directly prevent recurrent corneal erosion. However, maintaining good overall eye health, such as staying hydrated and managing conditions like dry eye, may indirectly support corneal health. Always discuss any lifestyle changes with your doctor.

Is recurrent corneal erosion contagious?

No, recurrent corneal erosion is not contagious. It is a non-infectious condition caused by a weakness in the adhesion of the cornea's outer layer, often due to a previous injury or an underlying genetic condition. You cannot catch it from or spread it to another person.

Can I wear contact lenses if I have recurrent corneal erosion?

During an active erosion, you should not wear regular contact lenses. Your doctor might use a special "bandage" contact lens as part of your treatment to aid healing and reduce pain. Once the erosion has healed and your condition is stable, your doctor can advise if and when it's safe to resume wearing your usual contact lenses.

Sources

• MedlinePlus — Recurrent Corneal Erosion
• Mayo Clinic — Recurrent Corneal Erosion
• Cochrane Library — Recurrent Corneal Erosion