应用旁中心眼压测定方法监测准分子激光原位角膜磨镶术后眼压变化

目的　分析两种不同注视方法在非接触眼压计测定中的应用 ,探讨准分子激光屈光性角膜手术后随访中较为准确的眼内压 (IOP)测定方法。方法　应用日本产NidekNT 2 0 0 0型非接触眼压计 (NCT) ,对准分子激光原位角膜磨镶术 (LASIK)术后 12 0例 (2 4 0眼 )进行眼压测定 ,分别测量术前、术后 1、2、3周及 1、3月角膜中心区及旁中心区眼压值 ,并计算其变异率 ,进行统计学比较和分析。结果　LASIK术后 ,角膜中央区及旁中央区眼压测定值均较术前偏低 ,差异有显著性统计学意义 (P <0 .0 5 ) ,中心眼压变异率及旁中心眼压变异率均为负值 ,但是旁中心眼压变异率明显小于中心眼压变异率 ,差异有统计学意义 (P <0 .0 1)。结论　LASIK术后测定值旁中心眼压值更接近于术前 ,旁中心眼压测定方法是LASIK术后应用非接触眼压计随访中较为理想的眼压测定方法。

Measure the changes of intraocular pressure on eccentric after excimer laser in situ keratomileusis

ObjectiveTo analyze the use of noncontact tonometer in both different fixation. Evaluate the precise measurement of IOP after Lasik. MethodsIOP were measured with noncontact tonometer (Nidek NT 200 made in Japan) in 240eyes of 120 patients. The IOP in central and eccentric were taken preoperative,1w?2w?3w?1m and 3m after operation. Calculate its variance. The data were analyzed . Results The IOP in central and eccentric were lower than that of preoperative. There were significant difference (P<0.05). The variance of central and eccentric were negative .The variance of eccentric was lower than that of central. There were significant difference(P<0.01).Conclusion The IOP of eccentric after LASIK close to that of preoperative. The measurement of eccentric IOP with noncontact tonometer is desirable in follow up.