Why do my right eye jump?

An eye twitch, or myokymia, is often caused by stress, fatigue, caffeine intake, or eye strain. It can also result from dehydration or lack of sleep. While usually harmless and temporary, frequent or persistent twitching may warrant a visit to an eye care professional to rule out any underlying conditions. If the twitching is accompanied by other symptoms, such as vision changes or eye irritation, seek medical advice.