Monthly contact lenses are designed to be worn during the day for up to 30 days after opening, then discarded and replaced with a fresh pair. Getting the most out of them means knowing how to put them in, take them out, clean them properly, and store them safely each night. Here’s everything you need to handle monthly lenses with confidence.
How the 30-Day Schedule Works
The clock starts the day you open a new pair, not the day you finish the previous one. Even if you skip wearing them on certain days, those days still count toward the 30-day window. The lens material gradually breaks down from exposure to air, solution, and the natural proteins in your tears, so stretching them past a month increases your risk of discomfort and infection regardless of how many times you actually wore them.
A simple way to stay on track: write the opening date on the box or set a recurring monthly reminder on your phone. After 30 days, toss the lenses and start fresh.
Putting Lenses In
Wash your hands thoroughly with soap and water, then dry them with a lint-free towel. Lint or fibers on your fingers will transfer straight to the lens and irritate your eye. If you’re new to contacts, trim your fingernails short to avoid scratching your cornea during the process.
Place the lens on the tip of your index finger (dominant hand) and check its shape. A correctly oriented lens looks like a smooth bowl with edges that curve straight up. If the edges flare outward like a rimmed plate, it’s inside out. Flip it and check again.
Use your other hand to hold your upper eyelid open. With the middle or ring finger of the hand holding the lens, pull your lower eyelid down. Look straight ahead into a mirror, then gently place the lens onto the colored part of your eye. Release your eyelids slowly and blink a few times to let the lens settle into position. Always use your fingertips, never your nails, to handle the lens.
If the lens folds or sticks to your finger instead of your eye, add a drop of fresh solution to the lens and try again. This is completely normal for beginners, and it gets faster with practice. Most people go from several minutes per eye to a few seconds within a couple of weeks.
Taking Lenses Out
Wash and dry your hands again before removal. Look up, then use one finger to pull your lower eyelid down. With the pad of your index finger, slide the lens down onto the white part of your eye, then gently pinch it between your thumb and index finger to lift it off. Sliding it off the cornea first makes removal more comfortable and reduces the chance of irritating the sensitive center of your eye.
If the lens feels stuck, don’t force it. Blink several times or apply a few rewetting drops to loosen it before trying again.
Cleaning Your Lenses Each Night
Every time you remove your lenses, they need to be rubbed, rinsed, and stored in fresh solution. Skipping this step lets proteins, bacteria, and debris build up on the surface, which is the single most common cause of contact lens infections.
Place the lens in the palm of your hand, apply a few drops of solution, and gently rub the lens on both sides with your fingertip for about 20 seconds. Then rinse it with more solution and place it in your clean case filled with fresh solution. This “rub and rinse” method physically removes deposits that soaking alone can’t dissolve.
Choosing the Right Solution
Most monthly lens wearers use a multipurpose solution, which cleans, rinses, disinfects, and stores lenses in one product. It’s straightforward: rub, rinse, fill the case, soak overnight, and the lenses are ready to wear in the morning.
Hydrogen peroxide systems are the other option. They’re especially effective at killing germs and work well for people with sensitive eyes or solution allergies. However, hydrogen peroxide must fully neutralize before you put the lens in your eye. These systems come with a special case containing a neutralizing disc. You fill the case, drop the lenses in, and leave them for a minimum of six hours (check your specific product’s instructions). Putting a lens in your eye before the peroxide has neutralized will cause immediate, intense stinging. Never use a regular lens case with a hydrogen peroxide system.
Keeping Your Lens Case Clean
Your lens case is a breeding ground for bacteria if you don’t maintain it. Every morning after putting your lenses in, dump out all the old solution. Never top off yesterday’s solution with fresh solution, because this dilutes the disinfecting power without actually killing the germs already growing inside.
After emptying the case, rinse both wells with fresh contact lens solution (not water), then rub the inside of each well with a clean fingertip to break up any biofilm. Clean the caps the same way. Wipe off excess liquid with a clean tissue and place the case and caps face down on a paper towel to air dry completely. Moisture left inside the case between uses is where bacteria thrive.
Replace the entire case at least every three months. Many solution bottles come with a new case included, making this easy to remember.
Keep Water Away From Your Lenses
Tap water, shower water, lake water, pool water: none of it is safe for contact lenses. Water can cause soft lenses to swell and change shape, making them stick to your eye and scratch the cornea. More importantly, water carries a particularly dangerous organism called Acanthamoeba, commonly found in tap water and natural water sources. An Acanthamoeba infection of the eye is extremely painful, can require a year or more of treatment, and in severe cases leads to corneal transplant or permanent vision loss.
Remove your lenses before swimming or showering. If water splashes into your eyes while wearing contacts, take the lenses out as soon as possible, clean and disinfect them, and give your eyes a break before reinserting. Never rinse your lenses or case with tap water, even if you plan to use solution afterward.
Sleeping in Monthly Contacts
Standard monthly lenses are not approved for overnight wear. Sleeping in them traps the lens against your cornea and dramatically reduces the oxygen reaching the eye’s surface, which raises infection risk.
Extended wear lenses do exist. These are made from materials that let more oxygen pass through, and the FDA has approved some for continuous wear ranging from one to six nights or up to 30 days, depending on the specific lens. Even with extended wear lenses, your eye care provider will evaluate whether your eyes tolerate overnight use, and your eyes should get at least one lens-free night after each scheduled wearing period. Unless your provider has specifically prescribed extended wear lenses and approved you for overnight use, always remove your lenses before bed.
Warning Signs That Mean Stop Wearing
Four symptoms should prompt you to remove your lenses immediately: redness, sensitivity to light, vision changes (like blurring or halos), and pain. You can remember these with the acronym RSVP.
If the symptom goes away after removal, clean and disinfect the lens before trying it again. If the symptom persists after removal, or if it returns when you reinsert the lens, leave the lenses out and contact your eye care provider. Pushing through discomfort with contacts is how minor irritations turn into serious infections.
Daily Habits That Protect Your Eyes
Put your lenses in before applying makeup and take them out before removing it. This keeps cosmetic residue off the lens surface. Use oil-free, water-based products around your eyes when possible, since oily formulas leave a film on lenses that’s hard to clean off.
Carry a small bottle of solution and your case with you. If your eyes become irritated during the day, you can remove and rinse your lenses rather than rubbing your eyes through them. Rubbing while wearing contacts can shift the lens, fold it under your eyelid, or push debris against your cornea.
Stick to the wearing schedule your provider recommended, even if your lenses feel fine past 30 days. Comfort isn’t a reliable indicator of lens safety. Microscopic deposits and material degradation happen whether you can feel them or not.