Frame glasses are the most commonly used method to correct refractive errors. For astigmatism correction, besides the original frame astigmatism glasses, astigmatism contact lenses are also very effective correction tools, and even break through the optical problems that frame glasses can not overcome, and can solve part of the problem of irregular astigmatism, thus showing great advantages. Generally, mild astigmatism can be directly worn by ordinary contact lenses, but if astigmatism is serious, professional astigmatism contact lenses should be chosen to correct it.
Mild astigmatism generally has a relatively small impact on vision, only in doing a particularly detailed work occasionally blurred vision, dizziness and other symptoms, can be alleviated after rest. This situation does not require special correction. One-half of the astigmatism can be added to the degree of frame glasses and converted to the degree of contact lenses.
However, if astigmatism exceeds 75 degrees, it is necessary to wear astigmatism contact lenses for astigmatism correction in order to achieve better correction effect. These contact lenses usually need to be customized to give more accurate data. Long-term use of computers, precision work or ordinary people with high eye intensity, regardless of the degree of astigmatism, should try to prepare astigmatism contact lenses, in order to avoid aggravating astigmatism caused by eye fatigue, torticollis and other conditions.
The degree of astigmatism is usually stable. If astigmatism, especially congenital astigmatism, must be corrected as soon as possible. Children astigmatism must be paid more attention to in order to prevent amblyopia. Six years old is the golden period for children's vision correction. Frame glasses can be worn under six years old, and hard contact lenses can be chosen after mydriasis optometry over six years old.