How Often Should You Replace Your Contact Lenses?

Contact lenses

Doctor, may I ask if contact lenses should be replaced every one to two years?

Xiao Yi, 10~19 year old female. Ask Date: 2007/02/14

Dr. Zhang Yanrui reply Ophthalmology

Yes.
Contact lenses are categorized into disposable and extended wear types.
Extended wear lenses are not recommended for use beyond one year, as impurities that are difficult to clean can accumulate on the surface, potentially causing eye damage.
Therefore, they should be replaced every year.

Reply Date: 2007/02/14

More Info

When it comes to contact lenses, the replacement frequency depends on the type of lenses you are using, as well as your individual eye health and lifestyle. Generally, contact lenses are categorized into several types based on their replacement schedules: daily, bi-weekly, monthly, and extended wear lenses.
1. Daily Disposable Lenses: These are designed to be worn for one day only. At the end of the day, you simply discard them and use a fresh pair the next day. This option is often recommended for those who want the convenience of not having to clean and store lenses overnight. Daily disposables can also reduce the risk of eye infections since you are using a new, sterile lens each day.

2. Bi-Weekly and Monthly Lenses: These lenses can be worn for a specified period (usually up to two weeks or one month) before they need to be replaced. It is crucial to follow the manufacturer's guidelines and your eye care professional's recommendations regarding cleaning and storage. If you notice any discomfort, redness, or changes in vision, you should remove the lenses immediately and consult your eye care provider.

3. Extended Wear Lenses: Some lenses are approved for overnight wear, allowing you to keep them in for up to a week or even longer. However, wearing lenses continuously increases the risk of complications such as corneal hypoxia (lack of oxygen to the cornea) and infections. It is essential to have regular check-ups with your eye care professional if you choose this option.

4. Signs You Need to Replace Your Lenses: Regardless of the type of lenses you use, you should replace them if you experience discomfort, vision changes, or if they become damaged or dirty. Additionally, if you notice that your lenses feel drier than usual or if you have difficulty seeing clearly, it may be time to replace them.

5. Consultation with Eye Care Professionals: It is vital to have regular eye exams and consultations with your eye care provider. They can assess your eye health, recommend the best type of lenses for your needs, and provide guidance on how often to replace them based on your specific circumstances.

In summary, while some contact lenses may last a year or two, it is essential to adhere to the recommended replacement schedule for the specific type of lenses you are using. Regular check-ups and open communication with your eye care professional will help ensure that your eyes remain healthy and comfortable while wearing contact lenses.

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