The Invisible Threat: Why It Is Dangerous to Wear Contact Lenses Every Day 0 136

Expert - Ophthalmologist Ekaterina Kasatkina

1. Disruption of Oxygen Exchange in the Cornea

The cornea of the eye is the only part of the body that receives oxygen not from blood vessels, but directly from the air. Even modern lenses with high oxygen permeability create a certain barrier to gas exchange.

Prolonged wear, especially of models with low permeability or after their expiration date, can cause hypoxia (oxygen deprivation) of the cornea. This condition not only causes discomfort but can also lead to serious complications, such as the ingrowth of blood vessels into the cornea and its structural changes.

2. Dry Eye Syndrome and Irritation

Lenses can disrupt the natural process of eye moisture, partially preventing the evaporation of the tear film and mechanically affecting the surface of the eyelid.

This leads to the development or exacerbation of dry eye syndrome, which manifests as a feeling of sand, burning, redness, and instability of vision. Tear fluid evaporates more quickly, and its protective functions are reduced, making the eye more vulnerable.

3. Increased Risk of Infectious Diseases

Every touch to the lenses is a potential opportunity to introduce microorganisms to the surface of the eye. Poor hygiene, using expired solutions, or swimming with lenses significantly increases the risk of developing bacterial and acanthamoeba keratitis — severe inflammations of the cornea that can lead to permanent vision loss.

4. Mechanical Damage to the Cornea

Lenses have a strictly regulated wearing period. Neglecting these timelines, especially sleeping in lenses not intended for that purpose, leads to the accumulation of protein and lipid deposits on their surface. These deposits make the lenses rough, causing microscopic damage and erosions on the delicate surface of the cornea, opening the gates for infection.

5. Allergic Reactions and Accumulation of Deposits

Over time, not only proteins from tear fluid accumulate on the surface of the lenses, but also particles of dust, pollen, cosmetics, and other allergens. Such a “platform” of deposits can provoke the development of allergic conjunctivitis or giant papillary conjunctivitis — a specific inflammation directly related to wearing contact lenses.

Recommendations for Safe Lens Use

To minimize risks and maintain eye health, it is important to adhere to several rules:

• Follow the wearing schedule: Do not exceed the recommended daily usage time set by the manufacturer. Give your eyes a break by switching to glasses during work at home, studying, or resting.

• Strictly adhere to the replacement schedule: Lenses that have expired lose their properties and become dangerous.

• Maintain impeccable hygiene: Always wash your hands before handling lenses. Use only fresh solution for cleaning and storing.

• Do not sleep in lenses unless they are approved for extended wear.

• Regularly visit an ophthalmologist for preventive check-ups.

Contact lenses can be compared to comfortable and stylish shoes: they perform their function well, but to maintain comfort and health, they, like the eyes, need regular rest. A responsible approach to their use will allow you to enjoy clear vision and avoid many problems in the future.