目的：探究角膜/屈光分析仪OPD-Scan III评估后发性白内障患者行Nd：YAG激光术后视觉质量。

方法：回顾性研究。选取2021-05/2023-04于我院行Nd：YAG激光后囊膜切开术治疗的后发性白内障患者98例98眼，采用角膜/屈光分析仪OPD-Scan III获取患者高阶像差参数(彗差、球差和三叶草像差)和视觉质量参数\〖斯特列尔比(SR)和人眼调制传递函数(MTF)曲线中4 mm面积比(AR)\〗，比较患者术前，术后1 wk，3 mo时视力、高阶像差和视觉质量。

结果：纳入患者手术前后裸眼远视力(UDVA)、裸眼中视力(UIVA)、裸眼近视力(UNVA)、彗差、球差、三叶草、SR和AR比较均有差异(均P<0.001)。术后1 wk，3 mo UDVA、UIVA、UNVA、彗差、球差、三叶草、SR和AR与术前比较均有差异(均P<0.05)。术后3 mo UDVA、UIVA、UNVA、SR和AR与术后1 wk比较均有差异(均P<0.05)，术后3 mo彗差、球差、三叶草与术后1 wk比较均无差异(均P>0.05)，术后3 mo球差、三叶草与SR均呈负相关(r_s=-0.427，P=0.009； r_s=-0.436，P=0.010)，三叶草与AR呈负相关(r_s=-0.406，P=0.015)。

结论：后发性白内障患者Nd：YAG激光术后视力改善，使用角膜/屈光分析仪OPD-Scan III系统反映患者视觉质量具有较高的临床价值。

METHODS: A total of 98 patients(98 eyes)with posterior capsular opacification who underwent Nd:YAG laser posterior capsulotomy in our hospital from May 2021 to April 2023 were retrospectively selected as the research subjects, and higher-order aberration parameters(coma, spherical aberration and trefoil aberration)and visual quality parameters \〖Strehl ratio(SR)and 4 mm area ratio(AR)in the human eye modulation transfer function(MTF)curve\〗 were obtained using the corneal/refractive analyzer OPD-Scan III. The patient's visual acuity, higher-order aberration parameters and visual quality before surgery, and at 1 wk and 3 mo after surgery were compared.

RESULTS: There were statistically significant differences in uncorrected distance visual acuity(UDVA), uncorrected intermediate visual acuity(UIVA)and uncorrected near visual acuity(UNVA), coma, spherical aberration, trefoil aberration, SR and AR before and after surgery(all P<0.001), and there were statistically significant differences in UDVA, UIVA, UNVA, coma, spherical aberration, trefoil aberration, SR and AR at 1 wk and 3 mo postoperatively(all P<0.05). Additionally, there were differences in the UDVA, UIVA, UNVA, SR and AR at 3 mo postoperatively compared with those parameters at 1 wk postoperatively(all P<0.05), while there were no statistical significance in coma, spherical aberration, trefoil aberration at 3 mo postoperatively and those at 1 wk postoperatively(all P>0.05). Furthermore, the spherical aberration, trefoil aberration were negatively correlated with SR(r_s=-0.427, P=0.009; r_s=-0.436, P=0.010), and the trefoil aberration was negatively correlated with AR(r_s=-0.406, P=0.015).

CONCLUSION: The visual acuity of patients with posterior capsular opacification improved after Nd:YAG laser surgery, and the corneal/refractive analyzer OPD-Scan III system has a high clinical value in reflecting patient's visual quality.