Myopic patient is when match contact lens, also can encounter degree to be right sometimes but still cannot see the case of thing clearly, this is caused by astigmatism of the eye place very likely.So, when astigmatism adds myopia, how should we match contact lens again?
Astigmatism is also a kind of ametropia, different from myopia, astigmatism can not form a focus, so can cause to see things not clear and there are double shadow.A lot of people suffer from astigmatism, just severity degree is different, especially in myopic patient most common.There is no need to correct astigmatism when there is no symptom, but if you have reached the level that affects vision and do not take measures in time, it will cause serious consequences such as torticular neck, amblyopia.
Therefore, not all astigmatism must be customized astigmatism contact lenses.The vast majority of people are not affected by astigmatism, can directly wear ordinary contact lenses, but usually more than 75 degrees of astigmatism needs additional correction, must wear both corrected myopia and astigmatism contact lenses, to prevent eye fatigue, headache, degree deepening.
We need to know oneself astigmatism degree, be about to go to normal glasses shop or ophthalmic hospital to do match lens to evaluate.When it comes to degree conversion, if you are not good at it, be sure to ask a professional to help you calculate it, because you may need to consider the problem of binocular balance.
Whether it is contact lenses or astigmatism contact lenses, or, in the final analysis, tools to assist in seeing, reasonable use can continue to increase the degree of control, but still cannot play a therapeutic role.In order to prevent the degree of deepening, in daily life, still want to correct bad habits, actively participate in physical exercise, and increase the intake of nutrition in the diet.