Contact Lenses: How Often to Change Them & How to Clean Them Properly

Contact lenses are a safe and convenient way to correct vision — as long as they are worn and cared for correctly. Knowing how often to replace contact lenses and how to clean them properly is essential to prevent eye infections and maintain healthy vision.

How Often Should You Change Contact Lenses?

The replacement schedule depends on the type of lenses prescribed by your eye care professional.

Daily Disposable Lenses

These lenses are worn once and discarded at the end of the day. They should never be reused.

Biweekly Lenses

Replaced every 2 weeks, even if they feel comfortable.

Monthly Lenses

Replaced every 30 days after opening, regardless of how often they are worn.

Extended Wear Lenses

Some lenses are approved for overnight wear, but only under professional supervision.

Always follow your optometrist’s guidance. Overwearing lenses increases the risk of irritation, dryness, and serious infections.

Why Replacing Lenses on Time Matters

Wearing lenses longer than recommended can lead to:

• Protein and bacteria buildup

• Eye redness and irritation

• Blurred vision

• Increased risk of corneal infection

• Reduced oxygen supply to the eye

Proper lens hygiene is just as important as timely replacement.

How to Clean Contact Lenses Properly

If you wear reusable lenses (biweekly or monthly), follow these steps daily:

1. Wash and Dry Your Hands

Use soap and water before handling lenses.

2. Rub and Rinse

Even if using a “no-rub” solution, gently rub lenses with multipurpose solution to remove debris.

3. Use Fresh Solution

Never “top off” old solution. Always discard used solution and refill the case with fresh disinfecting solution.

4. Clean the Lens Case

Rinse the case with solution (not water) and allow it to air dry upside down.

5. Replace the Case Regularly

Change your lens case every 1–3 months.

What NOT to Do

• Do not sleep in lenses unless prescribed

• Do not shower or swim while wearing lenses

• Do not use tap water to clean lenses

• Do not reuse daily disposables

• Do not extend wear beyond the recommended schedule

Signs of a Contact Lens Problem

Remove your lenses and book an eye exam if you experience:

• Eye pain

• Redness

• Light sensitivity

• Blurred vision

• Discharge

• Persistent dryness

These could indicate infection or corneal inflammation and require immediate attention.

How Often Should You Have a Contact Lens Check?

Even if your vision feels stable, a yearly contact lens aftercare appointment is essential to:

• Check eye health

• Update your prescription

• Assess lens fit and comfort

• Prevent complications

Lily's eyes Tip

Contact lenses are safe and comfortable when worn responsibly. Following the correct replacement schedule and proper cleaning routine helps protect your eyes from infection and ensures long-term eye health.

Book your appointment today at lilyseyes.com