The area of the retina with the sharpest light sensitivity is located in the macula, also known as the macular central sulcus, and this is a physiological structure located in the posterior pole of the retina. Almost all of the cone cells in this area are located in this place, so the vision is very sharp, and this is also the main part of the central vision composition. If any lesion involves the macular area, it can cause a dramatic loss of vision and distortion of vision. For example, if there is macular edema, macular hemorrhage, macular anterior membrane, macular tear, or retinal detachment, the loss of vision is usually very significant. Once these symptoms appear, go to the hospital as early as possible for a detailed fundus examination, especially of the macula. According to the specific conditions of active treatment, only early treatment, it is possible to avoid serious effects, try to make the vision again back to normal.