Vision loss can cause a dramatic decrease in an individual’s quality of life and should be actively sought out for the cause and treated symptomatically, including medication or surgery. When the retina is diseased, it can have a significant impact on vision. However, when the refractive media of the eye, such as the cornea, lens, and vitreous, become cloudy or have refractive errors (including myopia, hyperopia, astigmatism, etc.), even if the retina is functioning well, vision loss can occur due to light blockage and the inability of objects to be imaged on the retina. Retinopathy of the fundus is difficult to treat and can be treated with medication, laser or surgery depending on the specific condition, and the vision loss caused by it is slow to recover and difficult to restore to its original level. The clouding of the refractive media of the eye can be treated with surgery. Corneal clouding can be replaced by corneal transplantation or artificial cornea; crystal clouding is cataract, which can be treated with cataract surgery; vitreous clouding can be treated with vitrectomy. If amblyopia exists, in addition to glasses, the eye with good vision should be covered and amblyopia training should be conducted to promote the recovery of vision in the amblyopic eye. Refractive errors can also be corrected by laser refractive surgery in adulthood if you don’t want to wear glasses. So exactly how to restore vision, you need to go to the hospital for an examination to see what the cause of vision loss is, and then deal with it accordingly.