Twitching of the right eyelid may be related to facial muscle spasm, fatigue, epilepsy and so on. 1. Facial muscle spasm: due to the stimulation of the nerves innervating the facial muscle movement, causing the patient to develop one side of the eyelid spasm, and also the corners of the mouth can be twitching. 2. Visual fatigue: mostly occurs after overwork, such as long-term desk work, long-term overtime work, etc., leading to long-term eye use, causing one side of the eye muscle spasm. 3. Epilepsy: Eyelid spasms on one side caused by abnormal brain discharges during seizures, commonly seen in infants or children, characterized by blinking and muscle spasms. When the right eyelid twitching, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions and then further relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or therapy.