Background The advent of wavefront technology in the past five years has provided some insight into the optical outcomes of cataract surgery. The Tecnis Z9001 intraocular lens （Tecnis IOL, AMO） with a modified prola...Background The advent of wavefront technology in the past five years has provided some insight into the optical outcomes of cataract surgery. The Tecnis Z9001 intraocular lens （Tecnis IOL, AMO） with a modified prolate anterior surface was claimed to reduce or even eliminate ocular spherical aberration to improve the visual quality. The purpose of this study was to determine whether Tecnis IOLs can improve the quality of vision as evaluated by measuring visual acuity, wavefront aberration, and contrast sensitivity. Methods In an intraindividual prospective study, 20 patients with bilateral cataract were randomly assigned to receive a modified prolate anterior surface IOL （Tecnis Z9001, AMO） in one eye and a biconvex spherical surface IOL （CeeOn 911A, AMO） in the other. After 3 months, the following were investigated： best corrected visual acuity, pupil diameter, photopic and mesopic contrast sensitivity, and wavefront aberration of the whole eye （ocular）, cornea, and internal plane. Results The differences in the best corrected visual acuity and pupil diameter between the two groups were not statistically significant. Negative 4th-order spherical aberration （Z4^0） was found in the Tecnis group, whereas positive Z4^0 found in the CeeOn group for the internal and ocular plane. Statistically significant differences were found at the ocular higher-aberrations between the two IOLs. Contrast sensitivity testing showed significantly better results in the Tecnis group at visual angles higher than 1.0 degree under photopic conditions and at visual angles higher than 1.6 degree under mesopic conditions both without glare and with glare in comparison with the CeeOn group. Conclusions The Tecnis Z9001 IOL with a modified prolate anterior surface produces negative spherical aberration and consequently reduces the higher-order aberrations in pseudophakic eyes. This leads to enhanced contrast sensitivity and improved functional vision compared to conventional spherical IOLs.展开更多
目的评估高度近视合并白内障的患者双眼植入非球面多焦点人工晶状体AcrySof IQ ReSTOR的临床效果方法随机选取26例(52眼)高度近视合并白内障患者,接受白内障超声乳化吸除联合人工晶状体植入术。实验组(MIOL组,13例26眼)双眼植入非球面...目的评估高度近视合并白内障的患者双眼植入非球面多焦点人工晶状体AcrySof IQ ReSTOR的临床效果方法随机选取26例(52眼)高度近视合并白内障患者,接受白内障超声乳化吸除联合人工晶状体植入术。实验组(MIOL组,13例26眼)双眼植入非球面多焦点人工晶状体AcrySof IQ ReSTOR,对照组(IQ组,13例26眼)双眼植入非球面人工晶状体AcrySof IQ。检测术前视力、术后3个月裸眼远视力、最佳矫正远视力、裸眼近视力、最佳矫正近视力、屈光状态,问卷调查术后视近时对眼镜的依赖程度及患者的主观视觉症状。结果术后3个月,两组裸眼远视力、最佳矫正远视力、最佳矫正近视力、整体满意度、眩光、夜间视物模糊及色觉异常,差异均无统计学意义(P>0.05);而MIOL组裸眼近视力,视近距时满意度和视近距时脱镜率,MIOL组优于IQ组(P<0.05),差异有统计学意义。结论与非球面人工晶状体AcrySof IQ相比,高度近视合并白内障患者应用AcrySof IQ ReSTOR具有更好的视觉效果,近距离工作脱镜率高。展开更多
With the evolution of cataract surgery from visual rehabilitation to refractive surgery, aspheric intraocular lenses(IOLs) are being increasingly used in the field of ophthalmology. This increased use can be attribute...With the evolution of cataract surgery from visual rehabilitation to refractive surgery, aspheric intraocular lenses(IOLs) are being increasingly used in the field of ophthalmology. This increased use can be attributed to negative or zero spherical aberrations with unique optical designs, which counteract some of the positive spherical aberrations of the cornea. These alterations reduce the total spherical aberration of human eyes and improve the visual acuity in patients with cataract postoperatively. At present, various types of aspheric IOLs are used worldwide. Although the implantation of aspheric IOL is beneficial to the patients who need correction of spherical aberrations, much controversy is still associated with ocular residual spherical aberrations that facilitate the best visual quality for patients postoperatively. In order to provide reference for future clinical work and scientific research, this report reviews the relationship between the ocular residual spherical aberration of human eyes and visual quality.展开更多
Objective: To compare patient-reported outcomes after implantation of the ZA9003 intraocular lens(IOLs), or the MCX11 ASP IOLs or the spherical IOLs(HQ-201HEP). Methods: Prospective nonrandomized controlled trial was ...Objective: To compare patient-reported outcomes after implantation of the ZA9003 intraocular lens(IOLs), or the MCX11 ASP IOLs or the spherical IOLs(HQ-201HEP). Methods: Prospective nonrandomized controlled trial was used. A total of 105 patients(210 eyes) were divided into three groups according to the type of IOLs: ZA9003(35 patients, 70 eyes), MCX11 ASP(35 patients, 70 eyes) or HQ-201HEP(35 patients, 70 eyes). The main outcome was scores of Catquest nine-item short-form questionnaire. Additional outcome was best corrected visual acuities, spherical aberration(SA) and total higher-order aberrations(HOAs). Results: The global score was significantly lower in the spherical IOL group than the aspherical IOL group of-020 μm SA(P < 0.05) and the aspherical IOL group of-027 μm SA(P < 0.05), and no significant difference was found in the global score between the aspherical IOL group of-020 μm SA than the aspherical IOL group of-027 μm SA(P > 0.05). Significant differences were also found in question 2, question 5, question 6 and question 8 between the spherical IOLs and the aspherical IOLs. Conclusion: Implantation of an aspherical IOL could improve vision-related quality of life compared with a spherical IOL. However, there were no statistically significant differences in vision-related quality of life between aspheric IOLs with different negative spherical aberrations.展开更多
文摘Background The advent of wavefront technology in the past five years has provided some insight into the optical outcomes of cataract surgery. The Tecnis Z9001 intraocular lens （Tecnis IOL, AMO） with a modified prolate anterior surface was claimed to reduce or even eliminate ocular spherical aberration to improve the visual quality. The purpose of this study was to determine whether Tecnis IOLs can improve the quality of vision as evaluated by measuring visual acuity, wavefront aberration, and contrast sensitivity. Methods In an intraindividual prospective study, 20 patients with bilateral cataract were randomly assigned to receive a modified prolate anterior surface IOL （Tecnis Z9001, AMO） in one eye and a biconvex spherical surface IOL （CeeOn 911A, AMO） in the other. After 3 months, the following were investigated： best corrected visual acuity, pupil diameter, photopic and mesopic contrast sensitivity, and wavefront aberration of the whole eye （ocular）, cornea, and internal plane. Results The differences in the best corrected visual acuity and pupil diameter between the two groups were not statistically significant. Negative 4th-order spherical aberration （Z4^0） was found in the Tecnis group, whereas positive Z4^0 found in the CeeOn group for the internal and ocular plane. Statistically significant differences were found at the ocular higher-aberrations between the two IOLs. Contrast sensitivity testing showed significantly better results in the Tecnis group at visual angles higher than 1.0 degree under photopic conditions and at visual angles higher than 1.6 degree under mesopic conditions both without glare and with glare in comparison with the CeeOn group. Conclusions The Tecnis Z9001 IOL with a modified prolate anterior surface produces negative spherical aberration and consequently reduces the higher-order aberrations in pseudophakic eyes. This leads to enhanced contrast sensitivity and improved functional vision compared to conventional spherical IOLs.
文摘目的评估高度近视合并白内障的患者双眼植入非球面多焦点人工晶状体AcrySof IQ ReSTOR的临床效果方法随机选取26例(52眼)高度近视合并白内障患者,接受白内障超声乳化吸除联合人工晶状体植入术。实验组(MIOL组,13例26眼)双眼植入非球面多焦点人工晶状体AcrySof IQ ReSTOR,对照组(IQ组,13例26眼)双眼植入非球面人工晶状体AcrySof IQ。检测术前视力、术后3个月裸眼远视力、最佳矫正远视力、裸眼近视力、最佳矫正近视力、屈光状态,问卷调查术后视近时对眼镜的依赖程度及患者的主观视觉症状。结果术后3个月,两组裸眼远视力、最佳矫正远视力、最佳矫正近视力、整体满意度、眩光、夜间视物模糊及色觉异常,差异均无统计学意义(P>0.05);而MIOL组裸眼近视力,视近距时满意度和视近距时脱镜率,MIOL组优于IQ组(P<0.05),差异有统计学意义。结论与非球面人工晶状体AcrySof IQ相比,高度近视合并白内障患者应用AcrySof IQ ReSTOR具有更好的视觉效果,近距离工作脱镜率高。
文摘With the evolution of cataract surgery from visual rehabilitation to refractive surgery, aspheric intraocular lenses(IOLs) are being increasingly used in the field of ophthalmology. This increased use can be attributed to negative or zero spherical aberrations with unique optical designs, which counteract some of the positive spherical aberrations of the cornea. These alterations reduce the total spherical aberration of human eyes and improve the visual acuity in patients with cataract postoperatively. At present, various types of aspheric IOLs are used worldwide. Although the implantation of aspheric IOL is beneficial to the patients who need correction of spherical aberrations, much controversy is still associated with ocular residual spherical aberrations that facilitate the best visual quality for patients postoperatively. In order to provide reference for future clinical work and scientific research, this report reviews the relationship between the ocular residual spherical aberration of human eyes and visual quality.
基金supported by the Health Bureau of Shanghai City(201440029)
文摘Objective: To compare patient-reported outcomes after implantation of the ZA9003 intraocular lens(IOLs), or the MCX11 ASP IOLs or the spherical IOLs(HQ-201HEP). Methods: Prospective nonrandomized controlled trial was used. A total of 105 patients(210 eyes) were divided into three groups according to the type of IOLs: ZA9003(35 patients, 70 eyes), MCX11 ASP(35 patients, 70 eyes) or HQ-201HEP(35 patients, 70 eyes). The main outcome was scores of Catquest nine-item short-form questionnaire. Additional outcome was best corrected visual acuities, spherical aberration(SA) and total higher-order aberrations(HOAs). Results: The global score was significantly lower in the spherical IOL group than the aspherical IOL group of-020 μm SA(P < 0.05) and the aspherical IOL group of-027 μm SA(P < 0.05), and no significant difference was found in the global score between the aspherical IOL group of-020 μm SA than the aspherical IOL group of-027 μm SA(P > 0.05). Significant differences were also found in question 2, question 5, question 6 and question 8 between the spherical IOLs and the aspherical IOLs. Conclusion: Implantation of an aspherical IOL could improve vision-related quality of life compared with a spherical IOL. However, there were no statistically significant differences in vision-related quality of life between aspheric IOLs with different negative spherical aberrations.
文摘目的:探讨白内障超声乳化联合蓝光滤过型非球面人工晶状体植入术的临床效果。方法:年龄相关性白内障患者80例(80眼),术中植入AcrySof IQ人工晶状体为观察组,植入AcrySof Natural人工晶状体为对照组。观察术后1wk不同视标对比度的视力;使用主观像差仪检查实验组术后1mo的像差,依35项Zernike系数计算总像差及4阶像差的均方值(root means quare,RMS),比较实验组与对照组间的差异。结果:术后1wk,视标对比度为100%时,两组间差异无统计学意义(P<0.05)。对比度为25%时,两组间差异有统计学意义(P>0.05)。术后1mo,实验组与对照组总体像差的RMS均值分别为0.84±0.21μm及1.44±0.42μm,两者之间的差异有统计学意义。实验组、对照组4阶像差(球差)的RMS均值为0.58±0.18μm、1.14±0.37μm,两者之间的差异有统计学意义。结论:非球面人工晶状体可以减少术眼光学像差(尤其是球差),获得更好的低对比度视力,从而提高术后的视觉质量。
