Whether or not 400 degrees of myopia can be restored to normal depends on the patient’s age and eye condition, which varies by age. Myopia, also known as axial myopia, is a condition in which the eye is excessively elongated beyond its normal range, causing objects to appear in front of the retina. The current method of restoring myopia is to indirectly restore myopia by changing the refraction of the patient’s cornea or lens so that objects are presented on the retina of the stretched eye. A keratoplasty lens is a type of corneal contact lens that can be worn at night while sleeping and has clear naked eye vision during the day, also called OK lens. It is designed to temporarily change the curvature of the cornea to gradually reduce myopia and improve naked eye vision through an anti-geometric design principle. Myopic laser surgery, on the other hand, uses a laser to cut the cornea and permanently change the curvature of the cornea to treat myopia. Lens IOL implantation is performed by implanting a concave lens in front of the lens of the human eye to correct myopia, which is equivalent to wearing glasses inside the eye and achieving good naked eye vision. In summary, for adolescents under the age of 18 and for myopic groups with less than 600 degrees, keratoplasty is a good choice, not only to eliminate the need to wear glasses during the day, but also to slow down the progression of myopia to a certain extent, but it cannot be fully restored. The best way for adults whose myopia tends to stabilize is to opt for myopic laser surgery or IOL implantation with a lens, a technique that can say goodbye to myopia once and for all and take off the glasses.