Retinal detachment is a serious blinding eye disease, retinal detachment mostly occurs in patients with retinal degeneration, vitreous degeneration, high myopia, eye trauma, advanced diabetes, macular or other fundus diseases, patients with the above diseases need to pay attention to the appearance of the following symptoms: 1, flying mosquito phenomenon and flashing sensation: the earliest appearance, the elderly, especially highly myopic patients or patients with recent eye trauma, when suddenly The occurrence of retinal detachment should be alerted when a large number of flying mosquitoes or persistent flashing sensation in a certain direction occurs. When the retina is detached, when the affected eye looks at an object, there will be an illusion that the object is missing, such as looking at the palm of one’s hand when the fingers are missing. Therefore, patients with serious eye diseases should seek medical consultation if they detect the symptoms of visual field defects at an early stage, so as to obtain early diagnosis and treatment. 3.Vision deformation: When the peripheral retinal detachment spreads to the posterior pole or shallow detachment occurs in the posterior pole, in addition to the loss of central vision, there may be visual deformation, which is manifested as smaller visual objects, curved lines and other phenomena. 4, sudden vision loss: the vision loss caused by retinal detachment is more rapid, and patients may even lose their vision instantly. In summary, the symptoms of retinal detachment can be manifested as flying mosquito phenomenon, flash sensation, visual field defect, visual distortion, sudden loss of vision or even blindness.