There is no correspondence between a 12-week-old girl with myopia and a reduced visual acuity of 4.5 and the inability to infer myopia from visual acuity.
Myopia is a common disease in ophthalmology, and childhood and adolescence are the most prevalent ages for myopia. Once myopia occurs, it will lead to vision loss. However, due to individual differences, each patient’s tolerance level of myopia is different, so it is not possible to speculate the patient’s myopia level based on the patient’s current visual acuity.
In addition, there are many other causes of vision loss, the common ones being myopia, astigmatism, eye diseases, amblyopia, and so on.
When a 12-year-old girl experiences a decrease in vision to 4.5, she should go to the ophthalmology department of a hospital as soon as possible to determine her exact degree of myopia through an optometry examination. The optometry examination will determine the patient’s exact degree of myopia and clarify whether there are other causes of vision loss. After a detailed examination by the doctor, a reasonable corrective plan will be formulated.