Why You Should Never Just 'Top Off' Your Contact Lens Case With Fresh Solution

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iStock

For those with less-than-perfect vision, rinsing and storing contact lenses each day might be a familiar routine. But as the American Academy of Ophthalmology (AAO) points out, few people actually clean their lenses properly.

One investigation by the Centers for Disease Control and Prevention revealed that 99 percent of people who wear contact lenses exhibit at least one behavior that puts their eyes at risk for irritation or infection. There are more than a dozen things that contact lens wearers should never do—from swimming in contacts to using the same case for months or years—but the dangers of wearing lenses that have been left to soak in old contact lens solution are often overlooked.

People who wear contacts sporadically might have a habit of keeping their lenses stored in a case for days or weeks at a time, only to pop their lenses in when they need them without ever changing the solution. Even if you rinse your lenses with multi-purpose immediately prior to inserting them, the AAO says this is still a bad idea.

"Disinfecting solutions lose their efficacy over time, leading to microbial overgrowth in the case and on the lens," the AAO said in a statement. If you're going to store your lenses for a few days, be sure to swap out the solution the night before you wear them in order to disinfect the lenses and remove all harmful bacteria. That could be as often as once a day if you wear lenses regularly.

The same guideline applies to "topping off" whatever old solution remains in your contact case with a squirt of fresh solution. It seems like a cost-saving measure, but you may end up spending more on co-pays at the doctor's office to treat an eye infection.

And yes, contact solution does go bad, so if you have any travel-sized bottles lying around, check the expiration date before you wind up with an eye infection on your next vacation.

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!