Sleeping in Contact Lenses: Risks, Symptoms, and Protection

Sleeping in contact lenses increases the likelihood of developing an eye infection. Bacteria and other germs can build up on your lenses while you sleep, as the lens acts as a barrier that traps these microorganisms against your eye. This can lead to infections such as keratitis, which is the inflammation of the cornea. Infection can also cause discomfort, swelling, and the potential for vision loss if not treated promptly.

Corneal hypoxia occurs when the cornea, the clear front surface of the eye, does not receive enough oxygen. Wearing contact lenses reduces the amount of oxygen reaching the cornea, and this issue is especially prominent when sleeping in lenses. When the cornea is deprived of oxygen for extended periods, it can swell, resulting in blurry vision, eye discomfort, and the formation of blood vessels within the cornea, all of which impair eye health and vision clarity.

One of the more serious effects of wearing contact lenses too long is the development of new blood vessels in the cornea. When the cornea does not get sufficient oxygen, blood vessels begin to grow into it. This condition, known as corneal neovascularization, can affect your vision, as these new vessels can obstruct light from entering the eye properly, leading to blurry or distorted vision. If left untreated, it can become a permanent issue that affects the quality of your sight.

Contact lenses can disrupt the natural tear film that lubricates the surface of your eyes. Wearing lenses for too long, especially while sleeping, can exacerbate dryness and irritation. The lenses can absorb moisture from the eyes, leaving them feeling dry, gritty, or uncomfortable. This can lead to a burning or itching sensation, making it difficult to focus or even blink normally.

Perhaps one of the most severe consequences of sleeping in contact lenses is the formation of corneal ulcers. These open sores on the cornea can develop when bacteria become trapped under the lenses. If not treated quickly, corneal ulcers can lead to permanent damage and scarring of the cornea, which can significantly impair vision. The development of corneal ulcers is often linked to contact lens misuse, particularly when lenses are worn overnight without proper care or cleaning.

Maintaining clean lenses is essential for preventing infection and irritation. Follow these steps to ensure your lenses stay safe to wear:

• Always wash and dry your hands before touching your contact lenses.
• Rub the lenses gently with a cleaning solution for at least 10 seconds on each side.
• Rinse lenses with fresh solution before placing them in your eyes, never using tap water.

A clean lens case is just as important as clean lenses. Follow these cleaning steps for your case:

• Empty the old solution from your lens case and rinse it with fresh solution every day.
• Allow the case to air dry by leaving it open and upside down after each use.
• Replace your lens case at least once a month to avoid bacterial buildup.

Unless explicitly prescribed by your eye doctor, avoid sleeping in contact lenses. Even lenses designed for extended wear should be removed for a period of rest, allowing your eyes to breathe and recover.

Daily disposable lenses reduce the risk of infections, as they do not require cleaning and are replaced every day. Since they are discarded after use, they help prevent buildup and germs that can accumulate on lenses worn for longer periods.

Adhere to your prescribed lens replacement schedule, whether daily, biweekly, or monthly. Changing your lenses on time ensures they fit well, maintain proper hygiene, and function effectively.

Water can carry harmful germs that can get trapped under your lenses, so always remove your lenses before swimming, showering, or using a hot tub. This practice helps prevent eye infections and irritation.

Even if you wear contact lenses regularly, it is essential to give your eyes periodic breaks. Switch to glasses at least once a week to reduce the strain on your eyes and give them time to recover.

Ensure you have regular eye exams to monitor your eye health. Your eye doctor will check the fit of your lenses and assess your overall eye condition to prevent problems before they become more severe.