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"Popular Science Article" Myopic vision does not improve, is it amblyopia?

Posting time:2022-12-02 06:06:32

"Popular Science Article" Myopic vision does not improve, is it amblyopia?

In my daily work, optometrists often send messages to ask, I just gave a myopic patient an optometry, and the degree is not high, but I can't improve my vision, whether he is "myopia and amblyopia", what should I do? manage? Let's find out today! So in our optometry industry, is there a saying of "myopia and amblyopia"? Let's first understand the latest definition of the diagnostic criteria for amblyopia (2011): the best corrected visual acuity of one eye or both eyes is lower than the corresponding age due to monocular strabismus, uncorrected anisometropia, high refractive error and form deprivation during visual development. The visual acuity is amblyopia; or the visual acuity of both eyes differs by 2 lines or more, and the eye with lower visual acuity is amblyopia.

It should be noted here that the diagnosis of amblyopia needs to meet the following two conditions at the same time:

1. There is no organic disease in both eyes; at least one of the following causes is present : Monocular strabismus, uncorrected anisometropia and high refractive error, and form deprivation; 2. The best corrected visual acuity of one or both eyes is lower than the visual acuity of the corresponding age. If all three conditions are met at the same time, amblyopia can be diagnosed. If it is only nearsightedness and poor vision, amblyopia cannot be diagnosed based on these two conditions alone. May be functional vision loss. In clinical practice, the diagnosis of myopic amblyopia is rarely given, because even with high myopia such as -6.00D, if the refraction is not corrected in time, it is still possible to obtain clear objects when looking at near, which does not constitute the cause of amblyopia. A comprehensive examination is recommended at the time of diagnosis to avoid misdiagnosis. The basis of amblyopia: The patient cannot see clearly at any distance, and cannot show a clear image on the retina. 1. For hyperopia patients, adjustment is required to see far and near. The higher the degree of hyperopia, the greater the adjustment is required. People with high hyperopia may have difficulty seeing far away and even more clearly near. Farsighted images cannot be clearly displayed on the retina, so amblyopia caused by hyperopia belongs to amblyopia with high refractive error. 2. For patients with moderate to high astigmatism, the parallel light from the outside world enters the eye and cannot be clearly focused on the retina for imaging, but forms a circle of confusion. The higher the degree of astigmatism, the larger the circle of confusion. No matter how the patient uses the adjustment, the far and near images cannot be clearly presented on the retina, so the amblyopia caused by astigmatism is also a refractive error amblyopia. 3. For myopic patients, it is not clear to see far, but it is clear to see near, even if the degree of myopia is relatively high, the patient still has the opportunity to see clearly at a relatively close distance. Therefore, myopic patients have the opportunity to see objects clearly and will not have amblyopia.

Currently, the term "myopia and amblyopia" is rarely mentioned in the optometry industry.

Then for some myopic patients, the vision cannot be improved. The editor thinks that there may be the following factors: ①Is it short-sighted very early, but never wear glasses ②The glasses I wore before have always been inappropriate, and the prescription is wrong ③Have you been injured or taken medicine when you were a child?④In visual development All of them are already high myopia ⑤ Pathological myopia ⑥ The adjustment function is relatively poor…………

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