Type A exotropia is also known as exotropia A sign, exotropia A phenomenon, A-exotropia, and separate strabismus A syndrome, i.e., the number of exotropia becomes smaller or even disappears when looking directly upward, while the number of exotropia increases when looking directly downward. There is no change in the degree of exotropia when looking away and near, and there is often overfunctioning of the superior oblique muscles, and the eyeball is inverted when the eyes are in the medial eye position. Patients may have jaw inward expression, small binocular solid field of vision, often with horror-like. So what should patients pay attention to the usual diet? 1, develop good eating habits, do not picky eating. 2, eat more coarse grains (such as cornmeal, millet, etc.), in order to increase the necessary supply of vitamins. 3.Fresh fruits and vegetables can help children to increase protein intake appropriately and limit the intake of too much sugar in order to promote the development of retina and optic nerve. 4. Do not eat over-steamed protein foods. 5.Supply some vitamins (such as vitamin B1, vitamin B12, vitamin C, cod liver oil, etc.) and minerals (such as zinc, iron, calcium, etc.) appropriately.