Amblyopia 500 degrees in a four-year-old girl usually refers to a refractive error of 500 degrees combined with amblyopia, which is usually more serious and requires attention and timely treatment. Amblyopia means that the best corrected visual acuity of the eye is lower than the normal visual acuity for this age group. 500 degrees usually means that the combined refractive error of higher degrees, the affected children will squint, tilt their heads to see things, unable to judge the depth of the degree of difficulty, and may trip and fall when walking, which will affect the normal life of the girl to varying degrees. This condition should be treated and intervened in a timely manner so as not to grow older, miss the sensitive period of visual development, and increase the difficulty of treating amblyopia. It can be treated by using masking therapy, wearing glasses for correction, etc. After cure, consolidation treatment should be carried out for 1 to 2 years. To summarize, parents are advised to bring their girls to the doctor in time and actively cooperate with the doctor, so as to avoid delaying the condition.