1, can not look at the object in front of the eyes or will not follow the light to turn the eyes, suggesting that the child has very poor vision in both eyes, or even black haze. When covering one eye, the child does not respond, while covering the other eye can cause irritability and crying, indicating monocular visual impairment or amblyopia. 2, usually like to squint to see things, tilt the head to watch TV, read books and watch TV close, then may have poor vision, refractive error (farsightedness, myopia, astigmatism, etc.). Some children’s crooked head is caused by strabismus, called ocular squint. 3. The two eyes are not in normal position with each other, such as: crossed eyes (internal strabismus), exotropia, upward strabismus, etc. Involuntary swaying of the eyes, medically known as nystagmus. 4, photophobia, children often squint to see things, or have frequent blinking symptoms. Congenital glaucoma, entropion, corneal inflammation and injury, aniridia, albinism, intermittent exotropia, upward strabismus and many other eye diseases can be photophobic irritation. 5. Tearing and eye discharge: large eye corners or eyelids with discharge and non-stop tearing symptoms. There may be conjunctivitis, entropion, congenital nasolacrimal duct occlusion, and other diseases. 6. Red eyes: redness of the white eyeball symptoms. It can be due to conjunctivitis, keratitis, iridocyclitis, etc. 7, white pupil: the original should be black pupil area appears white, yellow-white reflections, commonly known as “cat’s eye”. This may be due to retinoblastoma, retinopathy in immature children, congenital cataracts and other eye diseases. 8. Abnormal lid fissures and eye size. Such as ptosis; small corneas; small eyeballs; iris defects; congenital glaucoma . Patients with congenital ptosis are unable to open their eyes for many days when they are first born.