角膜塑形术是通过使用特殊设计的硬性角膜接触镜,逐步使角膜的弯曲度变平,从而降低近视度数,提高裸眼视力的一种可逆性非手术方法~([1])。夜戴型角膜塑形镜,采用高DK值材料,使镜片配戴过夜成为可能。其优越性在于夜间戴镜,外界各种因素的影响清,对镜片适应性要求相对低,由于睡眠时眼睑的压力和眼球快速运动的按摩作用,使角膜的弯曲度变平,从而使部分低度近视患者和儿童患者白天裸眼视力达到正常, Orthokeratology is a reversible non-surgical method to reduce myopia and improve uncorrected visual acuity through the use of specially designed rigid contact lenses that gradually flatten the curvature of the cornea [1]. Overnight wear orthokeratology lenses, the use of high DK material, the lens wear overnight possible. Its superiority is that wearing glasses at night, the impact of various factors outside the Qing, the lens of the relatively low adaptability, due to sleep eyelid pressure and rapid eye movement massage, the curvature of the cornea flattening, so that part of the low Degree of myopia patients and children with uncorrected visual acuity during the day to reach normal,