Five Leading Causes of Visual Impairments in Children in the USA

Cortical vision disorder: "Cortical visual disorder (CVI) is a neurological disease that has its own visual response to people, teaching materials, and the environment.The students who have these visual / behavioral characteristics have sensitivity and judgment If they turn out to be lost, they are considered to have a CVI due to their visual impairment. "For more detailed information and definitions please visit www.aph.org/cvi/development .

Retinopathy of prematurity: "Retinopathy of prematurity (ROP) is an eye disease that affects premature infants Previously this disease was called posterior fibroplasia, and ROP affects retinal immature blood vessels It will be several weeks after birth When a blood vessel is completed, the child no longer becomes a candidate for disease. "Www.blindbabies.org/factsheet_rop.htm

Optic nerve hypoplasia: "It is about optic nerve hypoplasia (ONH) during pregnancy. As the child develops in the uterus, the death of the optic nerve fibers is a natural process, and ONH is an exaggeration of this process Rarely ONH is not progressive, neither hereditic nor healable ONH ONH is one of the three most common causes of child's visual impairment Blindbabies.org/factsheet_onh.htm

Bleaching syndrome: "Bleaching is a hereditary disorder, a person with whitening disorder, a deficiency of skin or hair, or a decrease in pigmentation. The genes they inherit may produce a normal amount of melanin Can not be the main cause of the blindness of the white skin diseases is that there is no melanin in development and one in 17,000 people in the United States is estimated to have white lemon disease www.albinism.org or www .blindbabies.org / factsheet_albinism.htm

Optic atrophy: "Ocular neurodegeneration (ONA) is a permanent visual disorder caused by optic nerve damage. The function of the optic nerve carries information from the eye and is similar to the function of the cable processed by the brain The optic nerve is composed of the retinal nerve Fiber (axon): If some of these nerve fibers are damaged by disease, the brain can not obtain complete visual information, the visibility is blurred atrophy (Exhaustion) is part of or in the deep part of axonal injury Most axons are damaged The ability to clear the sight (visual acuity) of children is affected by nerve damage in the central part of the retina There is a possibility of affecting one eye or both eyes, but it may be gentle depending on the cause. "Www.blindbabies.org/factsheet_ona.htm

Five million children worldwide suffer from visual impairment. There are many eye diseases that can cause child vision disorder. They are white skin diseases, cataracts, white blood cells, cortical vision disorder (CVI), glaucoma, nystagmus, optic neuropathy, retinopathy of prematurity and retinitis pigmentosa. () There are many factors that affect the ability of the visually impaired to cope with the state and function. Assistance from professional therapists may be a major factor, family attitude is also important. In addition, social and emotional security has proven to be very important

Visually impaired means any visual state that affects the ability of an individual to successfully complete the activities of daily living. Visually impaired students are young children affecting their ability to learn from infants, toddlers, children, and disabilities in the visual system. For individuals with visual impairment, there are three classification systems for educational professionals. In order to be declared legally blinded, an individual must have a field of view of 20/200 or less, or limit the field of view to 20 degrees or less at the widest point. However, the federal classification system is mainly used to determine the eligibility of adult agency services.