What Is a Corneal Abrasion?
A corneal abrasion is a scratch, scrape on the surface of your cornea. Fingernails, makeup brushes and tree branches are common culprits of corneal abrasions. Some other causes of corneal abrasion are rubbing your eye and having very dry eyes.
Corneal Abrasion Symptoms
Why Do Corneal Abrasions and Corneal Erosions Hurt So Much?
The cornea has many nerve cells. Cells called pain receptors transmit pain to tell us about possible damage to the eye’s surface. In fact, there are hundreds of times more pain receptors in our cornea than there are in our skin.
Corneal Abrasion Diagnosis
Your ophthalmologist will put dye called fluorescein on your eye’s surface. Then they will look at your cornea with an instrument called a slit lamp. The dye will highlight a cut or scratch on the cornea.
Corneal Abrasion Treatment
Your ophthalmologist will treat your eye based on what they find in the exam. Following are some options.
- You might wear a patch over your injured eye. This is to keep you from blinking and making the corneal abrasion worse.
- You may use moisturizing eye drops or ointment. This adds a soothing layer over the cornea.
- Your ophthalmologist may prescribe antibiotic eye drops or ointment to prevent an eye infection.
- You may be given special eye drops to dilate (widen) your pupil. This can help relieve pain.
- You may be given a special contact lens to reduce pain and speed healing.
If your corneal abrasion is small, it probably will heal in 1–2 days. A larger corneal abrasion may take about a week to heal.
What Is Corneal Erosion?
Corneal erosion is when the layer of cells on the surface of the cornea, called epithelium, loosens from the layer underneath. This is painful and makes your vision blurry or hazy. Corneal erosion pain may start suddenly, often when you first wake in the morning. Your eyes get dry while you sleep, and your eyelid might stick to the cornea. If the epithelium is not firmly attached, opening your eyelids might peel the epithelium off.
Corneal Erosion Symptoms
Corneal erosion pain may start suddenly, often when you first wake in the morning. Your eyes get dry while you sleep, and your eyelid might stick to the cornea. If the epithelium is not firmly attached, opening your eyelids might peel the epithelium off.
Who Is at Risk for Corneal Erosion?
You are more likely to have corneal erosion if you:
- have very dry eyes
- have eyelids that do not close completely when you sleep
- had a corneal abrasion or injury to the cornea
- have a corneal disease (like corneal dystrophy)
- wear contact lenses that are not fitted properly
- wear contact lenses that have not been cared for properly
How Is Corneal Erosion Treated?
Corneal erosion is treated like a corneal abrasion (see above).
If you get corneal erosion two or more times, your ophthalmologist may recommend other treatment. This could include:
- ointments like sodium chloride 5%
- placing a bandage lens and starting topical antibiotics
- surgery (superficial keratectomy) or laser treatment to remove corneal tissue
- surgery called anterior stromal puncture. Your ophthalmologist will make tiny holes on the surface of your cornea. The scar tissue from these holes binds the epithelium to the layer underneath.
If your eyes are dry and corneal erosion happens often, talk with your ophthalmologist. He or she will discuss ways to keep your eyes moist. This may help prevent corneal erosion.
Help Your Eyes Heal from Corneal Abrasion or Erosion
Do not rub your eye while it is healing. Rubbing can slow down healing, or even make the problem worse.
Avoid wearing your usual contact lenses while your eye is healing. Ask your ophthalmologist when you can wear your lenses again.
Protect Your Corneas