While glasses are experiencing a bit of a comeback, many people still prefer the look and ease of contact lenses.
Though they are convenient, contact lenses can also put you at risk of a potentially serious eye condition called corneal hypoxia.
“Corneal hypoxia is a relatively common problem that is usually associated with contact lenses. It occurs when the cornea doesn’t get enough oxygen,” Dr. Matthew Gorski, director of quality at the Northwell Health Ophthalmology Service Line, told The Post.
The cornea — the transparent, domelike front part of the eyeball — doesn’t have its own blood supply and relies on the atmosphere, tears and eye fluids for its oxygen.
“A contact lens can sometimes reduce the amount of oxygen that is absorbed by the cornea, leading to corneal hypoxia,” Gorski explained.
In the early stages, corneal hypoxia isn’t much of a disturbance. If it becomes a problem, symptoms can include scratchy, itchy, irritated or red eyes, the sensation there’s a foreign body, light sensitivity, pain and decreased vision.
“The most important part of treating this condition is seeing your doctor right away if you have any of these symptoms,” he said.
More severe cases can lead to inflammation, infection, scratches, scarring and significant visual impairment.
One person with corneal hypoxia reported having cloudy vision in one eye. She suspected she got it from “an older brand” of contacts. She planned to switch brands after healing.
Treatment typically involves taking a break from — or cutting back on — contact use, as well as lubricating the eye with topical eye drops and artificial tears.
“If it progresses, a variety of surgical options may be required to treat the disease,” Gorski said.
To avoid corneal hypoxia, he advises ensuring “you have the correct type of contact lens that is more permeable to oxygen” and maintaining “proper contact lens hygiene as described by your eye doctor.”
Tips for contact lens wearers
According to the American Academy of Ophthalmology, best practices for contact lens hygiene include:
- Washing your hands with soap and water and drying them with a clean towel before touching your lenses.
- Not sleeping with your contact lenses in.
- Not showering, swimming or doing anything that gets water into your eyes while wearing contacts.
- Keeping your lens case clean and replacing it every three months or sooner if damaged.
