In clinical practice, we sometimes see parents bring their two- or three-year-old children to the ophthalmology department, whose eyes are round and large, but the black eyes are foggy, and they cannot see anything, even relying on touch to recognize objects like blind children. Some parents say that they took their children to the ophthalmology department when they were very young, but they always thought it was conjunctivitis keratitis, and the eye drops were not good, but as they got older the children found that their vision was getting worse. This eye disease, called “congenital glaucoma”, is one of the blinding eye diseases, if not detected early and treated early, children may lose their vision at a very young age. The incidence rate is 1/30,000 (one in 30,000 children), and once the disease is present, 80% of children develop it within one year of age, and it is more common in boys. The main symptoms are: photophobia, tearing, and eyelid spasms. Signs are: corneal enlargement to 12 mm or more (black eye), corneal clouding and edema, reduced visual acuity, reduced visual field, high intraocular pressure, fundus changes, and myopia. Treatment: Drugs can only temporarily improve the symptoms, and surgery is usually required. Preferred atrial angle dissection or trabeculotomy, trabeculectomy, silicone tube valve implantation, photocoagulation/condensation, etc. are required for severe and repeat cases.