The increase in astigmatism after wearing OK lenses may be due to problems in fitting or using OK lenses, or due to one’s own lifestyle habits or conditions such as conical cornea. The first thing to do is to check whether there is any mismatch or mistake in wearing the opposite of keratoplasty lenses. If the measurement and calculation of data such as keratometry are not matched with the eyes during the process of testing and fitting, it will not only lead to discomfort in the eyes and limitation of vision correction, but also rapid growth of myopia and astigmatism during long-term use. In addition to the reasons of lenses, there is also a possibility that the user himself suffers from conical cornea or does not pay attention to the care of the lenses to appear corneal conjunctival inflammation and infection, etc. OK lenses can only temporarily change the curvature of the cornea, if the user does not pay attention to the eye, long-term unhealthy posture of the eyes with its astigmatism is also going to grow. It is recommended that if you have poor vision correction effect after the use of keratoplasty lenses, or if you have infections and inflammation, you should review in time, improve the slit lamp microscope and lens data testing, adjustment and treatment.