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目的:探讨LASIK前后非接触眼压计测量值的校正方法。方法:分别用超声角膜测厚仪和NCT眼压计测量469例近视患者角膜中央厚度和眼压,LASIK术前眼压以CCT固定值来校正,以术后眼压-术后第7天眼压+术前眼压≤21mmHg(1mmHg=0.133kPa)为标准来校正术后眼压。结果:469例近视患者CCT在445～618μm,眼压8.0～21.7mmHg,眼压随CCT增加而增高。结论:CCT是影响眼压测量的重要因素,本法为LASIK前后NCT眼压值校正最简单而实用的一种方法。
Objective: To investigate the calibration method of non-contact tonometer before and after LASIK. Methods: The corneal thickness and intraocular pressure of 469 myopic patients were measured by echocardiography and NCT tonometer respectively. The intraocular pressure (IOP) before LASIK was corrected by CCT. The postoperative IOP, the intraocular pressure + Preoperative intraocular pressure ≤ 21mmHg (1mmHg = 0.133kPa) as a standard to correct postoperative intraocular pressure. Results: 469 cases of myopia CCT 445 ~ 618μm, intraocular pressure 8.0 ~ 21.7mmHg, intraocular pressure increased with the increase of CCT. Conclusion: CCT is an important factor that affects intraocular pressure measurement. This method is the simplest and practical method to correct intraocular pressure before and after LASIK.