How to Sterilize a Contact Lens Case

icontact lens case image by Sandra Henderson from

When you remove your contact lenses, you may store them in plastic cases. The plastic case can harbor bacteria over time, which can contaminate your contacts. Contact lens cases need replaced two to three times a year, but they need to be properly sanitized monthly to kill the bacteria. Rinsing and cleaning the cases after each use will help to minimize the risk of contaminating your contacts.

Wash and dry your hands with an antibacterial soap. Remove the contact lenses from the case and set them aside in a clean bowl with contact solution.

Empty any remaining contact solution from the case. Wash the case with warm water and liquid dish soap to remove dirt and debris.

Fill a cooking pot with water. Place it on the stove top over high heat.

Bring the water to a boil. Place the contact case into the boiling water. Boil the case for five to 10 minutes.

Flip the contact lens case over onto a towel to air dry. This will allow the water to drain from the case.


Replace your contact cases every three to four months.

You can also boil the cases in the microwave in a microwave-safe glass container for three to five minutes.


Always rinse and dry the contact case each time that you use your contacts.