There are early symptoms of retinal detachment, and only early detection can lead to early treatment. The early symptoms of retinal detachment are as follows: 1, flying mosquitoes and flashes Appearing earliest, middle-aged and elderly people, especially highly myopic patients, should be alert to the possibility of retinal detachment when a large number of mosquito-like dots appear in front of their eyes, especially when there is a bright light like lightning in a certain direction. 2. Visual field defect When retinal detachment occurs, some sensitive patients may find visual field defect or feel that a black curtain obscures a certain direction in front of their eyes. If the retinal detachment affects the posterior pole, especially the macula, the visual acuity will drop sharply; if there is only peripheral retinal detachment, it has no or little effect on the central visual acuity. 4.Vision distortion When retinal detachment affects the posterior pole, in addition to the loss of central vision, there is also visual distortion, distortion and small size of visual objects.