When myopic eyes get old, they usually get presbyopia. Presbyopia is a normal physiological change, which is caused by the gradual hardening of the lens, weakening of the elasticity, and the gradual weakening of the ciliary muscle function, which leads to a gradual decrease in the ability of the eyes to regulate near and far. The blurring of near vision, such as reading, occurs around the age of 40 to 45. Patients with myopia will also experience physiological changes such as hardening of the lens and weakening of its elasticity. Therefore, patients with myopia will also experience presbyopia, which manifests itself as blurring of near vision after wearing myopic lenses of sufficient prescription, while near vision will become clearer after lowering the prescription of myopia lenses or taking off the lenses.