Have there been times when you've left your soft contact lenses in for just a few days longer than your optometrist instructs? It's a basic fact that things are a whole lot better when they are at their freshest. The same rule can be used to understand the importance of changing your contact lenses. It's not a good idea to leave your contacts in longer than necessary. Although it might seem harmless, if you care about your eyes, don't ignore the lens schedule recommended to you by your optometrist. In other words, if you're told to change pairs every two weeks, then change them every two weeks, because they're not made to withstand reuse.
You might think, 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 eyes that gathers over time on the surface of your lenses which forms a light haze. Unclear vision is just the start.
If this continues, these proteins evolve and make your immune system think the accumulation is a foreign particle, and this can result in eye irritation, itching and redness. Which means your eyesight suffers. Dust and pollen also build up on the lens, slowly make it less clear But even when people take great care of their contacts, sooner or later they stop being as smooth and clear, due to normal wear and tear.
So stick to the plan your eye care professional advises for you. When you dispose of and replace your lenses when you're told to, you will never notice the difference that is so apparent when you overwear them.