Have you experienced your eyelid twitch involuntarily at an unexpected time more often than not blur your vision? If you are suffering from an eye twitch or eye spasm that may be harmful than your health than you thought it is.
It may be nothing or it could be anything. Lack of sleep is one of the causes of getting eye spasms. Generally speaking all the stress you put on your eyes especially excessive reading, TV watching or staring at the computer monitor for a prolonged time can also cause this.
It may also be a sign of vitamin deficiency, compressed nerved, an allergic reaction or worst a neurological disorder so better consult your doctor immediately if your eye twitching occurs more often than before.