AIM:To compare the objective visual quality after implantation of a toric intraocular lens(IOL)in order to correct moderate or high corneal astigmatism at the one year postoperative follow-up.METHODS:From December 201...AIM:To compare the objective visual quality after implantation of a toric intraocular lens(IOL)in order to correct moderate or high corneal astigmatism at the one year postoperative follow-up.METHODS:From December 2017 to June 2018,66 patients(90 eyes)with simple age-related cataract with regular corneal astigmatism greater than 1.5 D were enrolled in this prospective self-control study.The patients were implanted with Proming?toric IOL(model:AT3 BH-AT6 BH).The subjects were divided into moderate astigmatism group(46 eyes,1.5-2.5 D)and high astigmatism group(44 eyes,>2.5 D).The uncorrected distance visual acuity,residual astigmatism and axial position of IOL were observed before operation,3,6 mo and 1 y after operation.Modulation transfer function cutoff(MTF cutoff),Strehl ratio(SR),object scatter index(OSI)were observed by OQAS II to evaluate the objective visual quality of patients.RESULTS:There was no significant difference in UCVA,residual astigmatism,axial deviation,MTF cutoff,SR and OSI between moderate and high astigmatism group(all P>0.05).After 3 mo,UCVA,MTF cutoff and SR were significantly increased(all P<0.05),residual astigmatism and OSI were significantly decreased(all P<0.05).After 3 mo,all the indexes remained stable.CONCLUSION:Proming toric IOL can effectively treat age-related cataract patients with moderate-to-high regular corneal astigmatism,correcting corneal astigmatism,improving UCVA,ensuring long-term stability in the capsule,and providing patients with better visual quality.展开更多
【正】Dear Sir,M eridional amblyopia is sometimes put forward as a reason for not implanting Toric intraocular lenses(IOLs).It has been noted that patients with high levels of childhood astigmatism(】3 DC)can develop ...【正】Dear Sir,M eridional amblyopia is sometimes put forward as a reason for not implanting Toric intraocular lenses(IOLs).It has been noted that patients with high levels of childhood astigmatism(】3 DC)can develop persistent orientation-dependent visual deficits despite optical correction.Studies by Mitchell et al[1]demonstrated that meridional visual deprivation during the critical period of visual development results in permanently reduced response to stimuli in those orientations.This phenomenon was termed展开更多
文摘AIM:To compare the objective visual quality after implantation of a toric intraocular lens(IOL)in order to correct moderate or high corneal astigmatism at the one year postoperative follow-up.METHODS:From December 2017 to June 2018,66 patients(90 eyes)with simple age-related cataract with regular corneal astigmatism greater than 1.5 D were enrolled in this prospective self-control study.The patients were implanted with Proming?toric IOL(model:AT3 BH-AT6 BH).The subjects were divided into moderate astigmatism group(46 eyes,1.5-2.5 D)and high astigmatism group(44 eyes,>2.5 D).The uncorrected distance visual acuity,residual astigmatism and axial position of IOL were observed before operation,3,6 mo and 1 y after operation.Modulation transfer function cutoff(MTF cutoff),Strehl ratio(SR),object scatter index(OSI)were observed by OQAS II to evaluate the objective visual quality of patients.RESULTS:There was no significant difference in UCVA,residual astigmatism,axial deviation,MTF cutoff,SR and OSI between moderate and high astigmatism group(all P>0.05).After 3 mo,UCVA,MTF cutoff and SR were significantly increased(all P<0.05),residual astigmatism and OSI were significantly decreased(all P<0.05).After 3 mo,all the indexes remained stable.CONCLUSION:Proming toric IOL can effectively treat age-related cataract patients with moderate-to-high regular corneal astigmatism,correcting corneal astigmatism,improving UCVA,ensuring long-term stability in the capsule,and providing patients with better visual quality.
文摘目的:观察飞秒激光辅助白内障手术(FLACS)与传统白内障手术(Phaco)联合Toric IOL植入术在眼轴大于24mm的患者中的应用疗效。方法:前瞻性研究。选取2017-01/2018-03在我院行手术治疗的白内障患者49例49眼,飞秒组行FLACS术联合Toric IOL植入术,传统组行Phaco术联合Toric IOL植入术。观察两组患者视力、散光度、斯特列尔比(strchl)、高阶像差情况。结果:术后3mo,飞秒组和传统组患者视力(0.092±0.089和0.131±0.096)均较术前(0.855±0.213和0.948±0.135)显著改善( P <0.05),但两组之间视力、总残余散光、strchl值、角膜和全眼高阶像差均无差异( P >0.05)。飞秒组全眼4mm瞳孔直径下4s3、4s4、4Total和6mm瞳孔直径下6s5与strchl值均呈负相关,传统组全眼4mm瞳孔直径下4s3、4Total和6mm瞳孔直径下6s3、6s3+s5、6Total与strchl值均呈负相关。结论:眼轴大于24mm的白内障患者植入Toric IOL能有效矫正角膜规则散光,FLACS术和传统超声乳化手术均能使其保持眼内旋转稳定性,显著改善术后视觉质量。
文摘【正】Dear Sir,M eridional amblyopia is sometimes put forward as a reason for not implanting Toric intraocular lenses(IOLs).It has been noted that patients with high levels of childhood astigmatism(】3 DC)can develop persistent orientation-dependent visual deficits despite optical correction.Studies by Mitchell et al[1]demonstrated that meridional visual deprivation during the critical period of visual development results in permanently reduced response to stimuli in those orientations.This phenomenon was termed
