What to do if your child has weak eyes

When you find that your child has amblyopia, you should pay attention to adjusting their sitting posture, especially maintaining the correct posture when reading. If the patient's condition is more serious, he or she may need to go to the hospital for amblyopia treatment to avoid further deterioration of vision, which would otherwise cause complete damage to their eyes. In addition, be careful not to let them use their eyes for too long.

1. Strabismus amblyopia

It occurs in one eye. The child has strabismus or has had strabismus in the past. It is common in children under four years old with monocular constant strabismus. The cerebral cortex actively inhibits the visual impulse of the strabismus. Long-term inhibition forms amblyopia. The visual inhibition and amblyopia are only different in quantity. Generally, the inhibition can be relieved when the strabismus is injected, while amblyopia is a persistent visual impairment. The earlier the age at which strabismus develops, the faster the inhibition occurs and the more severe the amblyopia.

2. Anisometropic amblyopia

Because the two eyes see differently, the size and clarity of the retinal images of the two eyes are different. The macular image of the eye with higher refractive power is large and blurred, resulting in insufficient stimulation of the fusion reflex of the two eyes, and unable to form binocular single vision, thus producing passive inhibition. If the refractive power of the two eyes is more than 300 degrees, the higher refractive power often causes amblyopia and strabismus. So passive and active inhibition exist at the same time. The depth of amblyopia is not necessarily related to the degree of anisometropia, but is related to the nature of gaze. Those with paracentral gaze have deeper amblyopia. The nature of this type of amblyopia is similar to strabismic amblyopia, which is functional and reversible. It is sometimes difficult to distinguish clinically whether amblyopia is caused by anisometropia or secondary to strabismus. This type of amblyopia can be prevented if it is detected early and glasses are worn in time.

3. Refractive amblyopia

It is mostly binocular, occurring in children or adults with high myopia, nearsightedness and astigmatism who do not wear corrective glasses. Most have myopia of more than 600 degrees, hyperopia of more than 500 degrees, astigmatism ≥ 200 degrees or both. The visual acuity of both eyes is equal or similar, and there is no dysfunction in the image fusion function of both eyes, so it does not cause functional inhibition of the macula. If appropriate glasses are worn in time, the visual acuity can gradually improve.

4. Disuse amblyopia (form deprivation amblyopia)

In infancy, due to ptosis, corneal opacity, congenital cataracts or long-term eyelid covering after eyelid surgery, light stimulation cannot enter the eyeball, hindering or blocking the macula from receiving visual stimulation, thus causing amblyopia, which is also called visual stimulation-blocking amblyopia.