Abstract: generally, after correcting ametropia in patients with simple myopia, most monocular vision and stereoscopic vision can reach the normal level. After correcting ametropia, the visual acuity of amblyopia is still low. The main problem of these patients is that the visual system (mainly the visual cortex) does not develop normally.
The main clinical manifestation of simple myopia is low vision when looking far, but normal vision when looking close. In general, as long as simple myopia patients undergo refractive correction, their near and far vision can reach a normal level, and most of them have good binocular visual function and normal stereovision. A small number of pathological myopia, anisometropia, high myopia and astigmatism have different degrees of influence on monocular vision and stereopsis. After correcting ametropia, most monocular vision and stereopsis of other simple myopia patients can reach the normal level.
amblyopia is different from myopia in the following aspects
1 after correction of ametropia, the visual acuity is still low.
generally, after correction of ametropia in patients with simple myopia, most monocular and stereoscopic visual acuity can reach the normal level. After correcting ametropia, the visual acuity of amblyopia is still low. The main problem of these patients is that the visual system (mainly the visual cortex) does not develop normally.
The process of treatment is the process of normal development of the visual system. Therefore, amblyopia must be treated during the development of the visual system. At this time, the visual system has certain plasticity. Beyond this time limit, it cannot be completely cured. It is generally believed that preschool is the best age for the treatment of amblyopia, At the latest in school age (6-12 years old), it is difficult to completely cure after 12 years old.
myopia correction does not need to be limited in time, and amblyopia treatment must be timely.
2 amblyopia may damage stereo vision
Because the vision of one or two eyes of amblyopia patients has not been developed normally, and their stereoscopic vision has not been developed normally, most patients’ stereoscopic vision has been damaged to varying degrees, or even lost completely, In monocular inhibition (almost blind) state, manifested as three-dimensional blindness. There are defects in the spatial positioning function of amblyopia patients. For example, the doctor takes a pencil with the nib vertically upward, and the patient also takes a pencil with the nib downward. If the patient’s NIB vertically contacts the doctor’s nib, they often make mistakes. While normal people can easily complete this action and rarely make mistakes. For another example, when amblyopia patients play badminton or tennis, there are significantly more receiving errors and more spiking errors than normal people.
3 amblyopia treatment course is long
even if the treatment starts relatively early and is cured in school age, the whole process is also long. In the process of treatment, doctors need to give correct guidance to parents and children, and parents need to cooperate closely. Children must strictly implement medical orders, return visits regularly, and adjust the treatment plan at any time according to their condition.