The opposite eye is medically known as esotropia, which can be caused by genetic factors, abnormal fusion of the eyes, environmental factors, refractive errors, hydrocephalus, etc. Prompt medical consultation is recommended. 1. Genetic factors: If there is a history of esotropia in parents or relatives, the incidence of esotropia in children is relatively high. 2. Abnormal fusion of the eyes: This means that the ability of both eyes to fuse the objects they see into a single image is impaired, and is usually caused by congenital developmental abnormalities. 3. Environmental factors: such as long-term use of electronic products, long-term excessive eye use, etc., may also induce strabismus. 4. Refractive error: Mostly seen in hyperopic children, due to unclear vision, the eyes adjust accordingly, resulting in excessive collection, thus triggering Esotropia. 5. Hydrocephalus: It may compress the nerves controlling eye movement, thus triggering esotropia. The child may also suffer from depression, growth stagnation, mental decline, vision loss, headache, lethargy and other discomforts. Children with esotropia should seek medical attention in a timely manner to clarify their condition under the guidance of a doctor and undergo appropriate treatment, avoiding blind judgment on one’s own to avoid delaying the condition.