If you wear contacts, you likely use a form of "tear" to keep your lens(es) moist. Dried out contacts are itchy and annoying - feels like there's sand in your eyes. When my contact gets that way, I look forward to removing it - I welcome the relief of blurred vision.

Focus is a good thing, too much of it leads to an itchy and annoyed mind. Sometimes, we need the benefit of blurry vision in order to know how and what to focus on.

Perspective matters.