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Very tangled, 50 degrees of astigmatism, should I add glasses?

Posting time:2023-03-24 20:06:24

Very tangled, 50 degrees of astigmatism, should I add glasses?

There is a patient consultation recently in the Qianlimu Eye Clinic, 50 degrees of astigmatism, do I need to add glasses? In fact, this question was really confusing a few years ago, but with the rapid development and research of ophthalmic optometry in recent years, there have been more and more expert consensuses, and this question is not difficult to answer. First of all, generally speaking, astigmatism is the difference in the degree of myopia in different directions. This difference is astigmatism, so there are many different directions of astigmatism, and astigmatism in different directions is actually different for our visual quality. Mirror standards are also different. Myopic astigmatism is 180° ± 30° (horizontal direction), which is called astigmatism. Myopic astigmatism is 90° ± 30° (vertical direction), which is called retrograde astigmatism. Myopic astigmatism is 30°-60° or 120°-150° (oblique axis direction), which is called oblique axis astigmatism. In the "Expert Consensus on Refractive Correction in Children" in 2017, it was mentioned that preschool-aged (3-6 years old) and school-aged children (7-18 years old) need to be corrected if the conformal and anti-conventional astigmatism is greater than 1.50D (150 degrees). , Oblique axis astigmatism greater than 1.00D (100 degrees) needs to be corrected; here is the simple astigmatism, that is, there is no myopia or hyperopia, and only astigmatism is this expert suggestion. If you look at it this way, if the astigmatism is simply 50 degrees, you don't need to add it when you wear glasses. At the same time, the consensus also mentioned that if you are nearsighted or farsighted and astigmatism at the same time, and the astigmatism is greater than or equal to 0.50D (50 degrees), you need to add astigmatism when you wear glasses. Research source: Optometry Group of Ophthalmology Branch of Chinese Medical Association. Expert consensus on children's refractive correction (2017) [J]. Chinese Journal of Optometry and Vision Science, 2017,19(12):705-710. It is more important to note that if preschool children (3-6 years old) do not detect or correct astigmatism as soon as possible, the development of visual function may be inhibited, resulting in the formation of amblyopia. Amblyopia is the vision loss caused by visual function. Training improves vision, but after the age of 7, the training effect will gradually become worse and worse. After the amblyopia is fixed, it is good to wear glasses or to do corrective surgery. It is impossible to achieve normal vision; therefore, children 3-4 years old should go to the hospital or regular institutions. Refractive screening, early detection and early treatment are the most important. Reminder: In order to avoid customer complaints caused by visual disturbance caused by astigmatism, some optical shops will choose not to add astigmatism when fitting glasses, and give equivalent spherical lens correction. The purpose is to cater for consumers to shorten the adaptation period of glasses and improve the comfort of glasses. Remember that "accuracy" is more important than "comfort" in prescription glasses for children and adolescents.

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