Retinal lasering can have sequelae such as pain, visual field defects, and vision loss. Retinal lasering is mainly used for the treatment of fundus diseases, such as retinal tears, diabetic retinopathy, retinal detachment and so on. 1. Pain: The degree of pain may be greater during laser treatment, and the pain may last for a period of time after laser treatment, and may also cause headache symptoms. 2. Visual field loss: Since laser is a kind of strong energy, it may damage part of the normal retinal tissues in the process of using, thus causing visual field loss. 3. Vision loss: some patients may have inflammation reaction after laser treatment, causing mild eye edema and temporary vision loss. Patients are advised to consult the ophthalmology department of regular hospitals, and should consult the doctor in time if there is any discomfort after the operation.