How often do you leave your soft contact lenses in for just a few days extra? It's common knowledge that so many things are at their best when they haven't been used too much. You won't be surprised to hear that the same principle can be used to understand the importance of changing your lenses. As a rule, you shouldn't leave your lenses in your eyes for any longer than you need to. Although it might seem harmless to use them just one more time, if you care about your eyes, adhere to the lens routine that your eye care professional decides on. So, if you're told to use a new pair monthly, then change them every month, because they can't withstand reuse.
A lot of people think to themselves, can't I just squeeze two or three more wears out of them? To explain this, let's examine protein - and not the kind inside your burger, but the natural protein in your tears that builds up gradually on the surface of your lenses and creates a light haze. Unclear vision is just the initial result.
After some time, these proteins transform and make your immune system think the accumulation is a foreign particle, and this can lead to itchy, swollen and irritated eyes. Which means a toll is taken on your vision. Other factors can also attribute to this, like the build up of dust or pollen on the lens But even when people take great care of their contacts, over time they stop being as clear and smooth, due to normal wear and tear.
So stick to the schedule your optometrist decides on for you. When you dispose of and replace your lenses on schedule, you'll never detect the difference that becomes so apparent when you wear them for longer than you're supposed to.