The 4-week-old child’s eye axis length value of 48 is obviously not normal, referring to the children’s eye axis development table can be learned, the upper limit of the eye axis length at this age is around 20.5mm.
The development of children’s eye axis is closely related to the development of vision, for the 4-year-old child’s eye axis length value of 48, there is a problem, although the length of the eye axis will increase with the development of the person, but even a normal adult in the absence of refractive error, the average length of the eye axis is only 24mm, and the upper limit of the eye axis length of the reference for children of the age of 4 years old is 20.5mm.
Eye axis beyond the normal upper limit will have an impact on visual acuity, the general conversion method is beyond the normal 1mm myopia of the number of degrees will increase by 300 degrees accordingly, 4-year-old child’s eye axis reaches 48, which is not only a complete loss of farsightedness reserves, there are also hard to predict the number of degrees of myopia.
It is recommended that the occurrence of children’s eye axis is too long, resulting in high myopia and other situations to seek medical attention in a timely manner, improve the optometry and other ancillary examinations to discover the cause, and take timely targeted treatment or correction.