Macula, often misunderstood as the name of an eye disease. In fact, it is not. The macula is the anatomical name for a spot of retinal tissue that normally exists in the eye. The macula is a small area located in the center of the retina that is the thinnest and most visually sensitive, and is visible fundoscopically on the temporal side of the optic disc, 3-4 mm away, and is dark dark red in color. The macula has a large number of dense photoreceptor cells and is therefore the most visually sensitive and responsible for color discrimination. The macula is the most very important structure in the retina. If there is a localized lesion in this area, the patient will experience significant vision loss. There are also other symptoms, such as distortion, darkening, shrinking, and color changes in vision. There are many kinds of macular diseases, the most common ones are: macular degeneration, macular fissure, macular anterior membrane, macular inflammation and so on. Since macula is a retinal tissue, once the lesion occurs, it is irreversible to a certain extent, so it is difficult to restore vision completely even after treatment. The macula is located at the bottom of the eye, which cannot be seen by people at a glance, and must be examined by using special instruments. Currently, the most common means of examining the macular area is to perform an OCT of the eye. This is done by tomography to see if there are any abnormal structures in the macular layers, and then it can be combined with fundus fluoroscopy to determine whether treatment is needed and whether the treatment can achieve better results. Lutein is a substance that is present in large amounts in the macula, so taking care of lutein supplementation in the diet may have a potential nutritional and supportive effect on the cells in the macula. In conclusion, this part of the macula is vital to the eye, and everyone has a macula, and protecting this part from lesions is the only way to have clear vision.