What Causes Contact Lens Deposits and How to Prevent Them
After Wearing Contact lenses, small white spots or flaky residues often appear on the lenses. Over time, these deposits make lenses less comfortable to wear and reduce their softness. Why do these deposits form, and what risks do they pose?
The main source of lens deposits is the natural tear fluid in your eyes. During normal metabolic processes, the eye produces secretions containing proteins, lipids, and inorganic salts. These substances are typically flushed away by tears or removed during eye cleaning. However, when wearing contacts, tear fluid evaporates, leaving behind residues that cling to the inner lens surface due to electrostatic forces.
External factors like airborne dust particles, facial cosmetics, or eye moisturizing solutions also contribute to buildup. Contaminants from these sources similarly adhere to lenses through electrostatic attraction. This is why experts recommend inserting contacts before applying makeup, avoiding powdered cosmetics, and refraining from wearing lenses in dusty or windy conditions.
Deposit accumulation occurs continuously during lens wear. If not cleaned promptly, these residues can blur vision, cause irritation, reduce oxygen permeability, alter lens texture, and create a breeding ground for bacteria—increasing infection risks.
Thus, lens hygiene directly impacts eye health. Always clean lenses immediately after removal to minimize stubborn deposits. Avoid extended wear, opt for high-oxygen-permeable materials, and consider daily disposable lenses if regular cleaning proves challenging.
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