There are many causes of visual fatigue, so the recovery time cannot be generalized. Some patients with visual fatigue caused by prolonged close eye use can be relieved after 1 week of application of anti-fatigue eye drops. Some patients with visual fatigue caused by refractive error, optometry and refraction with appropriate glasses correction, can be restored to normal. Visual fatigue is a common clinical condition that can be seen in all walks of life and in people of all ages, with symptoms including blurred vision and eye discomfort after long-term vision, and some patients have systemic reactions. If the symptoms can be relieved after a short period of rest and conditioning, they are mostly caused by prolonged close eye use and can be treated with anti-fatigue eye drops. If the problem cannot be relieved after rest, it can be caused by other reasons, such as refractive error, which requires medical optometry and appropriate glasses. It is recommended that people who use their eyes frequently reduce the use of eyes at close range, look less at cell phones and computers, do eye exercises frequently, do more outdoor activities, and use warm towels to warm the eyes before going to bed, which can reduce the chance of visual fatigue.