Why is there such a big difference in prescription between my two glasses

Why is there such a big difference in prescription between my two glasses?

Answer: During the development of the eye, the axial length gradually increases, accompanied by the gradual flattening of the cornea and lens. The degree of myopia continues to increase, while the degree of hyperopia continues to decrease. If the development speed of the two eyes is different, it may cause anisometropia (you say the two eyes are the same). In addition to development, trauma, corneal lesions, cataract surgery, etc. may also cause this phenomenon.