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What unexpected effects will it have on your vision if you wear contact lenses for more than a year?
As modern people pay more attention to vision, the use of contact lenses has become increasingly common. However, many people are not fully aware of the potential effects of long-term contact lens wear. Research in recent years has shown that long-term contact lens wear may have unusual effects on the structure and function of the cornea, and may even cause changes in vision.
Many contact lens-induced structural changes in the cornea are due to hypoxia, which often causes the cornea to exhibit a range of changes.
Long-term wearing of contact lenses, especially soft contact lenses, will affect many aspects of the cornea, including corneal thickness, curvature, and opening sensitivity. These changes may not only cause vision loss, but also light sensitivity issues. Studies have shown that contact lens wearers experience a significant decrease in corneal sensitivity for up to five years.
Some important structural changes include:
- Formation of epithelial vesicles and microvesicles, which usually begin to appear after one week of contact lens wear and increase over time.
- The hypoxic corneal environment increases the risk of corneal pathology, including the formation of corneal neovascularization, which is an irreversible threat to vision.
- In patients who use hard contact lenses for a long time, the curvature of the cornea may increase, usually 0.5 diopters higher than normal.
According to clinical reports, these structural changes are mainly due to chronic hypoxia caused by wearing contact lenses. When the cornea's oxygen demand is not met, it may trigger a series of metabolic changes, and even lead to corneal edema and cell mutation. Even after you stop wearing contact lenses, some of the changes will still take time to recover.
Many problems related to contact lens wear time are reversible, and many functions of the cornea may gradually return after contact lens use is stopped.
Another issue worth noting is the tips for long-term use of contact lenses. Improper care and over-wearing of contact lenses will increase the risk of corneal infection. This not only involves the user's personal habits, such as improper cleaning, wearing contact lenses while sleeping, or even borrowing other people's contact lenses.
According to research, long-term effects on the cornea are also significantly reduced with the use of modern silicone hydrogel contact lenses, especially compared to traditional hydrogel contact lenses. Silicone hydrogel contact lenses have higher oxygen permeability, reducing the occurrence of many eye problems caused by hypoxia.
Even so, many contact lens users still need to exercise caution and ensure that their wearing and care practices are correct to reduce potential health risks.
At the same time, other factors affecting vision cannot be ignored. In addition to wearing contact lenses for too long, personal physique, environmental factors and living habits may affect eye health. This makes it necessary for every contact lens user to regularly check the condition of their eyes and maintain good communication with their ophthalmologist while enjoying clear vision.
The risks faced by long-term contact lens users are not limited to eye symptoms, but may also affect overall vision health.
The use of contact lenses is becoming more and more common in modern life. Whether it is for aesthetics or vision correction, correct wearing and care are crucial. So, are you ready to give your eyes a proper rest and rethink the need for contact lenses?
