目的评价虹膜自动跟踪联合Contoura矫正低中度近视伴角膜不规则散光的安全性和有效性。方法前瞻性队列研究。选择2017年1月至8月在我院行近视激光治疗的患者30例(60眼),随机分成两组,其中试验组15例(30眼)接受虹膜自动跟踪定位联合Conto...目的评价虹膜自动跟踪联合Contoura矫正低中度近视伴角膜不规则散光的安全性和有效性。方法前瞻性队列研究。选择2017年1月至8月在我院行近视激光治疗的患者30例(60眼),随机分成两组,其中试验组15例(30眼)接受虹膜自动跟踪定位联合Contoura辅助的LASIK;对照组15例(30眼)接受虹膜自动跟踪定位辅助的LASIK。分别在术前及术后1 d、1个月、3个月观察患者的裸眼视力、最佳矫正视力、表面变异指数(index of surface variance,ISV)、角膜表面垂直不对称指数(index of vertical asymmetry,IVA)、角膜斜轴散光(C3)、角膜规则散光(C5)、对比敏感度等,并作对比。结果术后3个月,试验组裸眼视力为1.12±0.14,高于对照组的1.04±0.19(t=8.58,P<0.05)。术后3个月,试验组ISV和IVA分别降为5.68±3.02和0.89±0.54,与术前比较差异均有统计学意义(均为P<0.05),且均明显低于对照组(均为P<0.05)。术后3个月,试验组C3和C5分别降为(2.10±0.63)D和(2.11±1.04)D,与术前比较差异均有统计学意义(均为P<0.05);对照组C3和C5与术前比较差异均无统计学意义(均为P>0.05)。术后3个月,试验组在明视状态下所有频段均高于对照组(均为P<0.05),在暗视状态下6.0 c·d-1、12 c·d-1时高于对照组(均为P<0.05)。结论虹膜自动跟踪联合Contoura矫正低中度近视伴角膜不规则散光是安全、有效的,能改善角膜的不规则状态,提高视觉质量。展开更多
AIM: To evaluate the visual outcomes of Contoura Vision(CV) with automatic eye tracking system in eyes with myopia and myopic astigmatism.METHODS: This prospective study included 160 eyes(80 patients) with moderate my...AIM: To evaluate the visual outcomes of Contoura Vision(CV) with automatic eye tracking system in eyes with myopia and myopic astigmatism.METHODS: This prospective study included 160 eyes(80 patients) with moderate myopia and irregular astigmatism between January and August 2018. Subjects were randomly divided into CV group(80 eyes) that under went CV femtosecond laser-assisted in situ keratomileusis(FS-LASIK) and a control group(80 eyes) that underwent wavefrontoptimized FS-LASIK. Visual outcomes and astigmatic vector analysis were evaluated and compared between preoperatively and 3 mo postoperatively. RESULTS: Basic details were similar in both groups(P>0.05). At 3 mo postoperatively, uncorrected distance visual acuity was 20/16, 20/20, and 20/25 in 24, 76, and 80 eyes of patients in CV group, respectively. The CV group was better in predictability of astigmatism correction at 3 mo postoperatively. In CV group, 64 eyes had deviation of astigmatic axis within 15° and 28 eyes had deviation of astigmatic axis within 5°, both were better than those in the control group. The number of eyes with residual astigmatism within 0.5 D were less in CV group(48 eyes) than the control group(40 eyes). Compared with the preoperative, C7 significantly reduced to 0.056±0.030 in CV group at 3 mo after the procedure(P<0.05), and were significantly lower than those in the control group(P<0.05).CONCLUSION: CV with automatic eye tracking system is safe and effective for the correction of myopia and myopic astigmatism.展开更多
文摘目的评价虹膜自动跟踪联合Contoura矫正低中度近视伴角膜不规则散光的安全性和有效性。方法前瞻性队列研究。选择2017年1月至8月在我院行近视激光治疗的患者30例(60眼),随机分成两组,其中试验组15例(30眼)接受虹膜自动跟踪定位联合Contoura辅助的LASIK;对照组15例(30眼)接受虹膜自动跟踪定位辅助的LASIK。分别在术前及术后1 d、1个月、3个月观察患者的裸眼视力、最佳矫正视力、表面变异指数(index of surface variance,ISV)、角膜表面垂直不对称指数(index of vertical asymmetry,IVA)、角膜斜轴散光(C3)、角膜规则散光(C5)、对比敏感度等,并作对比。结果术后3个月,试验组裸眼视力为1.12±0.14,高于对照组的1.04±0.19(t=8.58,P<0.05)。术后3个月,试验组ISV和IVA分别降为5.68±3.02和0.89±0.54,与术前比较差异均有统计学意义(均为P<0.05),且均明显低于对照组(均为P<0.05)。术后3个月,试验组C3和C5分别降为(2.10±0.63)D和(2.11±1.04)D,与术前比较差异均有统计学意义(均为P<0.05);对照组C3和C5与术前比较差异均无统计学意义(均为P>0.05)。术后3个月,试验组在明视状态下所有频段均高于对照组(均为P<0.05),在暗视状态下6.0 c·d-1、12 c·d-1时高于对照组(均为P<0.05)。结论虹膜自动跟踪联合Contoura矫正低中度近视伴角膜不规则散光是安全、有效的,能改善角膜的不规则状态,提高视觉质量。
文摘AIM: To evaluate the visual outcomes of Contoura Vision(CV) with automatic eye tracking system in eyes with myopia and myopic astigmatism.METHODS: This prospective study included 160 eyes(80 patients) with moderate myopia and irregular astigmatism between January and August 2018. Subjects were randomly divided into CV group(80 eyes) that under went CV femtosecond laser-assisted in situ keratomileusis(FS-LASIK) and a control group(80 eyes) that underwent wavefrontoptimized FS-LASIK. Visual outcomes and astigmatic vector analysis were evaluated and compared between preoperatively and 3 mo postoperatively. RESULTS: Basic details were similar in both groups(P>0.05). At 3 mo postoperatively, uncorrected distance visual acuity was 20/16, 20/20, and 20/25 in 24, 76, and 80 eyes of patients in CV group, respectively. The CV group was better in predictability of astigmatism correction at 3 mo postoperatively. In CV group, 64 eyes had deviation of astigmatic axis within 15° and 28 eyes had deviation of astigmatic axis within 5°, both were better than those in the control group. The number of eyes with residual astigmatism within 0.5 D were less in CV group(48 eyes) than the control group(40 eyes). Compared with the preoperative, C7 significantly reduced to 0.056±0.030 in CV group at 3 mo after the procedure(P<0.05), and were significantly lower than those in the control group(P<0.05).CONCLUSION: CV with automatic eye tracking system is safe and effective for the correction of myopia and myopic astigmatism.
