Choosing the Right Contact Lenses: Low vs. High Water Content

Q: Choosing the Right Contact Lenses: Low vs. High Water Content

Hello： Experiencing a burning sensation while wearing contact lenses may indicate an allergic reaction to the solution or the lens material. <br>It is advisable to consult an ophthalmologist to assess the severity of the allergy. <br>High water content lenses have better oxygen p

Contact lenses

I recently bought a new pair of contact lenses, but I feel a warm sensation when wearing them.
What could be the reason for this? When wearing contact lenses, I experience some dryness, redness, or an unusual feeling, especially after wearing them for a long time.
Should I choose low water content or high water content lenses? Thank you!

Meiyou neirong, 20~29 year old female. Ask Date: 2006/03/24

Dr. Zhang Yanrui reply Ophthalmology

Hello: Experiencing a burning sensation while wearing contact lenses may indicate an allergic reaction to the solution or the lens material.
It is advisable to consult an ophthalmologist to assess the severity of the allergy.
High water content lenses have better oxygen permeability and lower foreign body sensation, but they can absorb moisture, worsening dry eye symptoms.
Low water content lenses are less likely to cause dryness, but prolonged wear can lead to corneal hypoxia.
Therefore, it is important to work closely with your doctor or optometrist to determine the appropriate water content for your needs.

Reply Date: 2006/03/24

More Info

When it comes to choosing the right contact lenses, particularly regarding water content, it's essential to understand how water content affects comfort, oxygen permeability, and overall eye health. The sensation of heat, dryness, and redness you are experiencing while wearing your contact lenses can be attributed to several factors, including the water content of the lenses, the fit of the lenses, and the overall health of your eyes.

Low vs. High Water Content
1. High Water Content Lenses: Lenses with a higher water content (typically above 50%) can provide more comfort initially because they can hold more moisture. This can be beneficial for individuals who experience dry eyes, as the increased water content can help maintain hydration. However, high water content lenses are often thicker, which can reduce their oxygen permeability. This means that while they may feel comfortable at first, they can lead to dryness and discomfort over extended wear, especially if your eyes are not getting enough oxygen.

2. Low Water Content Lenses: Lenses with lower water content (around 38-45%) tend to be more durable and provide better oxygen permeability. This is crucial for maintaining eye health, especially if you wear your lenses for long periods. While they may feel less moist initially, they can be a better option for long-term wear, particularly for individuals who experience discomfort with high water content lenses. Additionally, lower water content lenses are less likely to absorb proteins and lipids from tears, which can lead to deposits that cause irritation.

Recommendations Based on Your Symptoms
Given your symptoms of heat, dryness, and redness, it may be beneficial to consider switching to a lens with lower water content. This could help improve oxygen flow to your cornea and reduce the feeling of dryness and irritation. However, it's also essential to ensure that the lenses fit properly. Poorly fitting lenses can cause discomfort regardless of their water content.

Other Factors to Consider
- Lens Material: The material of the lens can also affect comfort. Silicone hydrogel lenses, for example, offer high oxygen permeability and can be a good choice for those who experience dryness.

- Wearing Schedule: If you are wearing your lenses for extended periods, consider lenses designed for longer wear. Daily disposables can also be a good option, as they provide a fresh pair every day, reducing the risk of buildup and irritation.

- Eye Health: If you have underlying conditions such as dry eye syndrome, it’s crucial to consult with an eye care professional. They can recommend specific lenses or treatments to help manage your symptoms.

- Lubricating Drops: Using preservative-free lubricating eye drops can help alleviate dryness and discomfort while wearing contact lenses. Always check with your eye care provider to ensure the drops are compatible with your lenses.

Conclusion
In summary, if you are experiencing discomfort with your current contact lenses, it may be worth exploring lenses with lower water content, as they can provide better oxygen permeability and reduce irritation over time. However, it’s crucial to consult with your eye care professional to determine the best option tailored to your specific needs and to rule out any underlying issues that may be contributing to your discomfort. Regular eye exams and open communication with your eye care provider are key to maintaining optimal eye health and comfort while wearing contact lenses.

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