Contact lenses offer a convenient alternative to eyeglasses, providing clear vision and freedom. Proper lens care and hygiene are important for eye health. Understanding the consequences of improper use, like sleeping with lenses, helps ensure eye safety.
Immediate Discomfort and Irritation
Waking up after inadvertently sleeping with contact lenses often results in immediate eye discomfort. This irritation stems from reduced oxygen flow to the cornea, the clear front surface of the eye. During waking hours, the cornea receives oxygen directly from the air, but when eyelids are closed and lenses are in place, this oxygen supply is significantly limited.
The lack of oxygen can lead to corneal swelling, known as corneal edema, and a feeling of dryness because tears are less effective at lubricating the eye under the lens. This environment can cause symptoms such as redness, a gritty sensation, and blurred vision upon waking. The friction between the lens and the eye, combined with dryness, further contributes to this immediate irritation.
Serious Eye Complications
Beyond immediate discomfort, sleeping in contact lenses increases the risk of serious medical complications. The reduced oxygen environment under a closed eyelid and contact lens creates favorable conditions for bacteria to multiply. This can lead to serious infections like microbial keratitis, an inflammation of the cornea caused by microorganisms.
Corneal ulcers, open sores on the cornea, are a serious outcome of such infections, potentially leading to permanent vision loss or blindness if untreated. Symptoms of keratitis and corneal ulcers include severe eye pain, extreme light sensitivity, excessive tearing or discharge, and vision changes. Prompt medical attention is important if these symptoms appear.
Another condition that can develop is giant papillary conjunctivitis (GPC), where the inner surface of the upper eyelid becomes inflamed and develops small bumps. GPC is an allergic reaction or irritation caused by contact lenses rubbing against the eyelid, or by deposits on the lenses. Symptoms include itchy, red eyes, excess mucus, and a sensation of something being in the eye.
Steps to Take After Accidental Overnight Wear
If you accidentally fall asleep with your contact lenses in, avoid immediate, forceful removal. Your lenses are likely dry and may be stuck to the cornea, and attempting to pull them off could cause damage. Instead, allow your eyes to rehydrate by blinking several times and applying sterile, lubricating eye drops or saline solution.
Wait 5 to 10 minutes for the eyes to moisten and the lenses to loosen, making removal easier and safer. Once the lenses are out, give your eyes a break from contact lenses for at least 24 hours, wearing glasses instead. If you experience persistent redness, pain, blurred vision, or discharge after removal, consult an eye care professional, as these could be signs of an infection.
Best Practices for Contact Lens Wear
To minimize risks and maintain eye health, always remove contact lenses before sleeping, unless they are specifically prescribed for extended wear by an eye care professional. Even extended wear lenses carry an increased risk of infection compared to daily removal.
- Wash hands thoroughly with soap and water, drying with a lint-free towel before handling lenses.
- Use fresh, recommended contact lens solution for cleaning and storing lenses; never use tap water or saliva.
- Rub and rinse lenses as directed, even with “no-rub” solutions.
- Replace your lens case every three months.
Adhere to the recommended wearing schedule for your specific lens type, and attend regular check-ups with an eye care professional. These appointments help ensure proper lens fit, monitor corneal health, and allow for early detection of any potential issues. Following these guidelines helps protect your eyes and ensures a safer contact lens wearing experience.