Hard vs. Soft Contact Lenses: Which is Better for High Prescription?

Which is better, rigid gas permeable (RGP) contact lenses or soft contact lenses?

Hello, a few days ago I went to get fitted for contact lenses, and the optometrist said that due to my high prescription (700), it is recommended that I wear rigid gas permeable (RGP) lenses because they have better oxygen permeability and can help slow down the progression of my prescription.
Is it true that they can last for up to five years? How should I care for and maintain RGP lenses? Is it the same as soft lenses? What precautions should I take with RGP lenses? Thank you!

Yang, 10~19 year old female. Ask Date: 2001/09/03

Dr. Huang Bozhen reply Ophthalmology

Hard lenses are rarely worn because they are difficult to adapt to; any discomfort can be immediately noticed.
In contrast, soft lens users are quite common, but issues are often not easily detected since they feel very comfortable.
From a physician's perspective, it is recommended to try both types, but neither has an effect on deepening the degree of myopia.
As for the maintenance of hard lenses, it is relatively simple (please follow the manual), which involves daily cleaning without the need for enzyme tablets, and tap water should not be used.

Reply Date: 2001/09/03

More Info

When it comes to choosing between hard (rigid gas permeable) and soft contact lenses, especially for individuals with high prescriptions, there are several factors to consider. Your optometrist's recommendation for hard lenses due to your high prescription (700) is based on several advantages that these lenses offer.

Advantages of Hard Contact Lenses
1. Oxygen Permeability: Hard contact lenses typically have a higher oxygen permeability compared to soft lenses. This is crucial for maintaining corneal health, especially for individuals who wear lenses for extended periods. The increased oxygen flow can help reduce the risk of complications such as corneal hypoxia, which can occur with soft lenses, particularly if they are worn for long hours.

2. Vision Correction: Rigid lenses provide sharper vision for many patients, especially those with high astigmatism or irregular corneal shapes. They maintain their shape on the eye, which can lead to better visual acuity compared to soft lenses that may conform to the shape of the eye.

3. Durability: Hard lenses are generally more durable than soft lenses. They can last for several years with proper care, which aligns with your optometrist's suggestion that they can be used for up to five years.

Maintenance and Care
Caring for hard contact lenses is somewhat different from soft lenses. Here are some key points to consider:
- Cleaning: Hard lenses require a specific cleaning regimen. You should use a recommended cleaning solution to remove deposits and disinfect the lenses. Unlike soft lenses, which can be cleaned with multipurpose solutions, hard lenses often require a separate cleaning solution and a rinsing solution.

- Storage: When not in use, hard lenses should be stored in a clean lens case filled with fresh solution. It's essential to replace the solution regularly and avoid using tap water or saliva to clean or store the lenses.

- Handling: Always wash your hands before handling your lenses. Avoid touching the lenses with dirty hands, and be gentle when inserting or removing them to prevent scratching.

Considerations and Precautions
While hard lenses have many benefits, there are also some considerations to keep in mind:
- Adaptation Period: Some individuals may require an adaptation period when switching to hard lenses. Initially, they may feel uncomfortable, but this usually improves over time as your eyes adjust.

- Comfort: Hard lenses may not be as comfortable as soft lenses for some users, especially during the initial wear. If you experience persistent discomfort, consult your optometrist.

- Environmental Factors: Hard lenses can be more susceptible to environmental factors such as dust and wind, which may cause discomfort. If you work in a dusty environment or engage in activities that expose your eyes to irritants, you may need to consider this.

Conclusion
In summary, hard contact lenses can be an excellent choice for individuals with high prescriptions due to their superior oxygen permeability, durability, and potential for sharper vision. However, they require a different maintenance routine compared to soft lenses. It's essential to follow your optometrist's advice on care and handling to ensure the longevity of your lenses and the health of your eyes. If you have any concerns or experience discomfort, don't hesitate to reach out to your eye care professional for guidance.

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