Patients with punctate inner chorioretinopathy mainly complain of dark shadows, flashing sensations, dark spots, blurred vision and decreased vision in front of one eye. It can also be seen in diseases of the lens and vitreous humor. What are the preventive methods for punctate inner chorioretinopathy? 1, appropriate medication and dietary regimen can shorten the course of the disease and prevent recurrence. 2, the disease needs to be actively treated, and attention should be paid to avoid emotional stimulation, overuse of eyesight, excessive exertion and stay up late. 3, pay attention to the regulation of diet, less spicy and stimulating products, to ensure sufficient sleep, in order to reduce the chance of recurrence. In the vast majority of cases, vitreous turbidity will not cause vision loss, and even no treatment is required. These conditions include physiologic flecking, mild age-related degeneration and myopic changes. In a few cases, however, the presence of vitreous opacities is a very important warning sign of some blinding diseases. If treated promptly, the disease can be prevented from progressing and vision can be saved. Retinal detachment, for example, usually requires surgery, but if a careful examination is performed when the vitreous clouding first appears, sometimes a dry hole can be found and, with laser treatment, the formation of retinal detachment can be avoided, thus saving the pain of surgery. If there is a history of significant trauma prior to the appearance of vitreous opacities, more floating black shadows in front of the eyes, which arise more quickly and suddenly, along with a sense of flashing light and loss of vision, this is often a manifestation of such disease and requires prompt medical attention.