“Many parents do not think that their children’s low vision may be myopia, so they go to the optician to do a computerized optometry and spend an hour with a pair of glasses; this practice is convenient, but in the eyes of the ophthalmologist, it is very absurd.
Although myopia is a common eye disease in children, there are many reasons for children’s poor vision, including various eye diseases that affect vision, diseases of the optic nerve and even intracranial diseases that can affect a child’s vision. Only when these possibilities are ruled out do doctors consider refractive problems; and refractive abnormalities are not only myopia, but also farsightedness and various kinds of astigmatism, and even the possibility of amblyopia. The doctor has to thoroughly examine each and every one of them to determine the final diagnosis. Even simple myopia cannot be simply computerized optometry, for the following reasons. Yongliang Li, Studio Ophthalmology
The reason why our eyes can see objects at different distances is because the eyes have an adjustment function; this adjustment is done by the ciliary muscle in the eye; the contraction of the ciliary muscle causes the lens to become convex, and the near objects can be clearly imaged on the retina; the degree of contraction of the ciliary muscle varies so that we can see objects at different distances clearly; children have a strong adjustment ability and high ciliary muscle tone.
Computerized optometry is a high-tech optometry equipment, with fast, convenient and accurate characteristics, but it can not fully relax the eye adjustment, can not exclude the refractive influence of adjustment, so computerized optometry is only an approximate refractive scan. If you can not remove the adjustment of the eye computerized optometry often shows the results of myopic optometry is too high, farsighted optometry is not enough.
Dilated optometry is a medication that paralyzes the ciliary muscle, relaxes the tense muscles, and removes the eye’s regulation so that the refraction is accurate. He can eliminate pseudomyopia and fully expose the farsightedness or objective myopia.
A reasonable prescription not only takes into account the refraction of one eye, but also the eye position of both eyes, the coordination and balance of accommodation, and in some children, the complex reopening of the pupil after retraction. Therefore, the results of computerized optometry can only be used as a reference value for medical optometry, but not simply as a prescription for glasses.
In addition, the cause of low vision in children is not only myopia, but also farsightedness, astigmatism, amblyopia, and even eye diseases that can cause visual impairment. The treatment of eye diseases is delayed.
Therefore, children with vision problems must go to a regular hospital for a comprehensive eye examination to rule out possible eye diseases, as well as proper dilated eye examinations and medical prescription lenses. It is not advisable to take your child to the hospital to have their pupils dilated because you are worried that it will affect their studies.