Corneal Abrasion: First Aid, Healing Time and When to See a Doctor
What Is a Corneal Abrasion
A corneal abrasion is a scratch or scrape on the cornea, the clear front surface of the eye that covers the iris and pupil. The cornea is a thin, transparent dome that serves as the eye's outermost lens and is responsible for roughly two-thirds of the eye's focusing power. It also acts as a barrier against dirt, germs, and other foreign material. Because the cornea is densely packed with nerve endings, it is one of the most sensitive tissues in the body, which is why even a small disruption can produce significant discomfort.
The outermost layer of the cornea, called the epithelium, is only about five to seven cell layers thick. When this layer is scraped away, the underlying nerve endings become exposed, which is why even a tiny abrasion can cause sharp, immediate pain. The exposed area also becomes more vulnerable to infection until the epithelium regenerates and seals the surface again. According to the American Academy of Ophthalmology, corneal abrasions are among the most common eye injuries, and most superficial abrasions heal within 24 to 72 hours with proper care.
Corneal abrasions can affect anyone at any age. However, certain groups face a higher risk, including young children, athletes, outdoor workers, and people who wear contact lenses. Individuals with dry eyes or previous corneal injuries may also be more susceptible because their epithelium may not adhere as firmly to the layers beneath it.
What Causes Corneal Scratches
Many corneal abrasions happen during routine activities. A fingernail, a makeup brush, a tree branch, or even a piece of paper can scratch the eye on contact. Babies and toddlers frequently cause accidental corneal scratches while reaching toward a parent's face. Sand, dust, and small debris blown by the wind are also frequent culprits.
Wearing contact lenses that are damaged, poorly fitted, or overworn is a leading cause of corneal abrasions. Inserting or removing lenses with dry fingers, sleeping in lenses not designed for overnight wear, or wearing lenses past their recommended replacement schedule can all injure the corneal surface. If left untreated, a contact lens-related abrasion can progress into a more serious corneal ulcer.
Metal shavings, wood chips, and chemical splashes pose risks for workers in construction, manufacturing, and landscaping. Sports-related injuries are also common, particularly in activities involving fast-moving balls, racquets, or close physical contact. Wearing proper protective eyewear in these settings significantly reduces the chance of a corneal scratch.
Symptoms of a Corneal Abrasion
The hallmark symptom is a sharp, stinging pain in the affected eye. Many patients describe the sensation as feeling like something is stuck in the eye, even after the foreign object has been removed. Blinking often makes the discomfort worse because the eyelid rubs against the damaged area with each blink.
The eye typically responds to a corneal scratch with excessive tearing as a protective reflex. The white of the eye may become noticeably red or bloodshot. Some patients also experience swelling of the eyelid on the affected side.
A corneal abrasion can cause blurred vision, particularly if the scratch is located near the center of the cornea over the pupil. Sensitivity to light, known as photophobia, is also very common. You may find it uncomfortable to open the injured eye in bright environments.
How a Corneal Abrasion Is Treated
If you scratch your eye, the first step is to blink several times to allow your natural tears to flush out any small particles. You can gently rinse the eye with clean saline solution or artificial tears. If a foreign object is visible on the white of the eye, you may try to carefully flush it out, but never attempt to remove anything that is embedded in the eye or stuck to the cornea.
There are several things you should not do after a corneal abrasion, as they can worsen the injury or introduce infection. Do not rub or press on the injured eye, do not attempt to remove an embedded foreign body yourself, and do not wear contact lenses until the abrasion has fully healed and your eye doctor has cleared you. Avoid using redness-reducing eye drops, as they can mask important symptoms, and do not touch the eye with cotton swabs, tweezers, or other instruments.
When you visit our office for a corneal abrasion, the eye will be examined using a slit lamp microscope, often with a special fluorescein dye that highlights the damaged area under blue light. Depending on the findings, treatment may include antibiotic eye drops or ointment to prevent infection, lubricating drops to keep the surface moist, and in some cases a short course of non-steroidal anti-inflammatory drops for pain relief. For larger abrasions, a bandage contact lens may be placed over the cornea to protect the healing surface.
Frequently Asked Questions
Most minor corneal abrasions heal within 24 to 72 hours as the epithelial cells regenerate quickly. Larger or deeper scratches may take up to a week or longer, especially if there are complicating factors such as infection or an underlying corneal condition. You can learn more about the healing process on our page about corneal abrasion healing time.
Eye patching was once a standard treatment for corneal abrasions, but current evidence shows that patching does not speed healing and can actually increase discomfort for many patients. Patching also limits your ability to use lubricating drops and may create a warm, dark environment that encourages bacterial growth. Our cornea specialists generally recommend frequent lubrication and, when needed, a bandage contact lens rather than a traditional eye patch.
You should seek immediate care if you experience severe or worsening pain, a noticeable white spot on the cornea, significant vision loss, or if the injury was caused by a high-speed projectile or contaminated object. These signs may indicate a deeper injury, an embedded foreign body, or the early development of an infection.
The vast majority of corneal abrasions heal completely without any lasting effects on vision. However, deep scratches, infected abrasions, or injuries that involve the central cornea can sometimes leave a scar that affects clarity. In rare and severe cases where scarring is significant, a corneal transplant may eventually be considered.
Preservative-free artificial tears are the most commonly recommended drops to keep the corneal surface moist during healing. Your eye doctor may also prescribe antibiotic drops such as a fluoroquinolone to prevent bacterial infection while the epithelium is open. Non-steroidal anti-inflammatory drops can help manage pain in some cases, though they are used cautiously because prolonged use may slow healing.
What our Patients say
4.8
Reviews
(3,408)