Seeing a lot of light spots moving in the eyes may be caused by visual fatigue, vitreous clouding, retinopathy and other reasons. 1. Visual fatigue: Long-time close eye use, staying up late and other bad eye habits lead to visual fatigue, may appear in the eyes to see a lot of light spots. You should avoid excessive use of eyes and pay attention to rest. 2. Vitreous clouding: some people with age, may appear in the vitreous cavity of the hyaluronic acid macromolecules cracking, thus causing the vitreous refractive medium is not uniform, the eyes see a lot of light symptoms. 3. Retinopathy: retinal conditions such as retinal tears and retinal detachment cause the vitreous body to pull on the retina, and the symptom of seeing a lot of light spots in the eyes may occur. If there is a noticeable flashing sensation and significant loss of vision, you should seek medical attention for a clear diagnosis and professional treatment.