Under normal circumstances, the length of the eye axis of children around 11 years old is about 22mm, and the eye axis of adults is about 24mm. If the eye axis of 11-year-old children reaches 25mm, which is obviously beyond the normal value, it is mostly caused by myopia, and therefore more serious. Eye axis is mainly the length of the anterior-posterior axis of the eyeball, and myopia has a greater relationship, mainly with axial myopia and eye lesions, axial myopia patients with eye axis continues to lengthen, myopia also continues to increase, which can lead to the patient’s vision loss, affecting the normal life, the need to wear glasses to correct myopia, to improve visual acuity. 11 year old children are still in the developmental period, the eye axis reaches 25mm, but also continue to develop, and therefore more serious. Children with an eye axis of 25mm may also develop myopic fundus lesions, such as macular hemorrhage, retinal detachment, leopard-shaped fundus and vitreous clouding, etc., which can cause blindness in severe cases. It is recommended that patients with abnormal eye axes seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.