The symptoms of low eye pressure mainly manifest as corneal edema, blurred vision in the eyes, and significant loss of vision. If accompanied by choroidal or retinal detachment, it may also cause changes in visual field, distortion of vision, or floating objects or blocking sensation in front of the eyes, and these symptoms may persist for a long time. If the IOP is low for a long time, it can also cause atrophy of the eye. Low IOP is usually seen clinically in choroidal detachment after trauma, retinal detachment, ciliary body detachment, ophthalmic surgery, etc. Of course, it is also seen in localized tumor-occupying lesions of the eye, which can also cause low IOP. If the IOP is low for a long time, it will lead to changes in the structure and function of the eye tissue, such as corneal edema, which manifests as cloudy black eyes and congestion in the eyes. In addition, there is also clouding of the lens, vitreous clouding, folds in the fundus, edema, and choroidal detachment, which can lead to atrophy of the eye and complete blindness if treatment is not performed in a timely manner.