(Corneal Opacification; Cloudy Cornea)En Español (Spanish Version)
Definition | Causes | Risk Factors | Symptoms | Diagnosis | Treatment | Prevention
Corneal opacity is a disorder of the cornea, the transparent structure on the front of the eyeball, which can cause serious vision problems. Corneal opacity occurs when the cornea becomes scarred. This stops light from passing through the cornea to the retina and may cause the cornea to appear white or clouded over.
There are many causes of corneal opacity. In some cases, your doctor can recommend a treatment that will reverse the opacity and lessen your chance of needing additional treatment, such as surgery.
The following factors increase your chance of developing corneal opacity. If you have any of these risk factors, tell your doctor:
- Vitamin A deficiency
- Measles (when measles result in scarring/infection of the eye)
- Foreign bodies striking the eye
- Eye injury, whether from a force, such as a poke in the eye, or from a chemical agent
- Herpes simplex virus (which can be transmitted to the eyes)
- Other infections, including conjunctivitis or "pink eye"
- Additionally, wearing contact lenses for a long period of time, especially overnight, can increase the risk of eye infections and, as a result, increase the chance of developing corneal opacity.
If you experience any of these symptoms, do not assume it is due to corneal opacity. These symptoms may be caused by other health conditions as well. If you experience any one of the following, see your eye doctor immediately:
- Vision decrease or loss
- Pain in the eye or feeling like there is “something in your eye”
- Eye redness or light sensitivity
- Area on the eye that appears cloudy, milky, or is not completely transparent
Your doctor will ask about your symptoms and medical history, including illnesses and injuries, and perform a physical exam.
To prepare for a comprehensive eye exam, your doctor may put drops in your eyes to numb them and to dilate the pupils. Your doctor will use a slit lamp (specialized microscope) to focus a high powered beam of light into your eye to examine the cornea and other structures in your eye.
Talk with your doctor about the best treatment plan for you. Treatments vary depending on the most likely cause of the scarring and how severe the scarring is. Treatments may include:
- Eye drops containing antibiotics, steroids, or both
- Oral medications
In some cases, scar tissue may be removed surgically. The surgery may be performed using a laser, called phototherapeutic keratectomy (PTK), if the scarring is close to the corneal surface. In more severe cases, a cornea transplant may be necessary.
To help reduce your chance of developing corneal opacity, take the following steps:
- Take care to avoid injuring the eye. Wear eye protection during any potentially dangerous activity. Make sure the safety goggles are worn tight against the face, otherwise a foreign body can fly up under the goggles and injure the eye.
- Take proper care of contact lenses, and follow your doctor’s recommendations regarding wear and cleaning.
- See your doctor immediately if you suspect you have an eye infection, including conjunctivitis (pink eye), if you injured your eye, or if you develop any pain or change in vision.
American Academy of Ophthalmology
National Eye Institute
The Cornea Research Foundation of America
Canadian Association of Optometrists
Canadian Ophthalmological Society
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Last reviewed [Under Medical Review] by Eric L. Berman, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.