Have there been times when you've left your soft contact lenses in for more time than recommended? It's common knowledge that lots of things are at their best when they're new. Guess what? The same is also applicable to your contacts. There are so many reasons why you shouldn't keep them in your eyes for longer than you've been instructed to. Although you might be tempted to wear them just one more time, if you want your eyes to look healthy, adhere to the wearing and changing timetable given to you by your optometrist. So, if your optometrist tells you to replace them every two weeks, then change them every two weeks, because they can't withstand reuse.
You might ask, can't I just squeeze two or three additional wears out of them? In order to better understand this, let's take a look at protein – and not the kind inside your burger, but the natural protein found in your tears that gradually accumulates on the surface of your lenses, forming a light haze. Blurry eyesight is just the start.
After some time, these proteins transform and confuse your immune system, which begins to think that the accumulation is a foreign particle, which in turn can be expressed as itchy, swollen and irritated eyes. And this means that your eyesight suffers. Other factors can also attribute to this, like the build up of dust or pollen on the lens Even when you're strict about caring for your contacts, over time they become less clear and smooth, due to normal wear and tear.
It's best to stick to the schedule your optician has instructed you to. If you change your lenses at the correct times, you'll never even recognize the difference that is so obvious when you wear them any longer than you're meant to.