Background The TetraFlex accommodating intraocular lens （IOL） was designed to supply the patients both satisfied far and near vision after cataract surgery.So we need to evaluate the safety, distance and near visual...Background The TetraFlex accommodating intraocular lens （IOL） was designed to supply the patients both satisfied far and near vision after cataract surgery.So we need to evaluate the safety, distance and near visual acuity, subjective accommodation and IOL mobility with the TetraFlex accommodating IOL implantation.Methods Fifty eyes of 42 study-eligible cataract patients, who gave informed consent at a single eye clinic in China over a 10-month period, underwent phacoemulsification with TetraFlex IOL implantation.At three months postoperation,uncorrected visual acuities （UCVA）, best corrected visual acuities （BCVA）, distance-corrected near visual acuities （DCNVA）, subjective accommodation using the defocus method, and pilocarpine-induced IOL mobility were measured.Results No postoperative complications were noted in the study.Three months postoperation UCVA and BCVA were 20/40 or bettter in 82% （41/50） and 92% （46/50） of eyes, respectively; 66% （33/50） of the eyes had DCNVA of Jager （J） 4or better at 3 months.In addition, the mean subjective accommodation was （0.94±0.61） diopters （D） （range from 0.50 to 1.50 D） and pilocarpine-induced IOL mobility was （337±124） μm （range from 121 to 501 μm） with the TetraFlex.High relationship （r2=0.901, P 〈0.01） was found between these two measurements.Conclusion Implantation of the TetraFlex is safe and leads to excellent uncorrected distance vision and good uncorrected near vision.展开更多
Purpose: To assess the visual outcome after implantation of the new Hydrophylic IOL type 41 B/G accommodating intraocular lens (AIOL). Methods: The presented lens was implanted during cataract surgery. All patients we...Purpose: To assess the visual outcome after implantation of the new Hydrophylic IOL type 41 B/G accommodating intraocular lens (AIOL). Methods: The presented lens was implanted during cataract surgery. All patients were offered follow-ups, allowing two postoperative measurements to be performed at 3 months and between 2020 and 2021. The mean time between lens implantation and last follow-up was 5.3 years (min. 1 year, max. 10 years). Excluded were patients with age-related macular degeneration or amblyopia. Patients with a foreign lens implanted into the second eye were included in a separate control group. Corrected distance (CDVA) and uncorrected distance visual acuity (UDVA) at 5 m, and corrected near (CNVA) and uncorrected near visual acuity (UNVA) at 40 cm were assessed. Furthermore, the postoperative spherical equivalent (SE), the dependence on spectacles and the occurrence of optical phenomena were evaluated. Results: The final study cohort consists of 65 patients with 119 implanted AIOLs. Significantly better visual results were obtained in both postoperative follow-ups compared with the preoperative results. The mean values of the last follow-up for the UNVA, CNVA, UDVA, and CDVA were 0.107 ± 0.10;0.039 ± 0.08;0.097 ± 0.11;and 0.040 ± 0.09 logMAR, respectively. Visual outcomes remained on a high level for up to 10 years and showed significantly better results compared to the control group. Postoperative SE was significantly improved. Nearly 70% of patients were no longer dependent on glasses. Furthermore, the occurrence of disturbing optical phenomena was denied by all patients. Conclusion: The results of this AIOL are particularly promising, especially since gratifying visual results could still be measured 10 years after implantation.展开更多
Purpose:.To compare early visual function between patients undergoing phacoemulsification combined with multifocal and accommodative intraocular lens implantation.Methods: A total of 112 patients with age-related cata...Purpose:.To compare early visual function between patients undergoing phacoemulsification combined with multifocal and accommodative intraocular lens implantation.Methods: A total of 112 patients with age-related cataract undergoing phacoemulsification in our hospital were recruited for this study and randomly assigned into multifocal(56 eyes;ZAM00 group) and accommodative(56 eyes; FLEX group)intraocular lens groups. Visual acuity and contrast sensitivity were statistically compared between the two groups.Results:.No significant difference was found in uncorrected distant visual acuity between the ZMA00 and FLEX groups at1 week, or 1, 3, and 6 months after operation(all P>0.05).At postoperative 6 months, no statistical significance was noted in distant and intermediate best-corrected visual acuity or in contrast sensitivity between the two groups(all P>0.05). Patients in the ZMA00 group were superior to their counterparts in the FLEX group regarding near best corrected visual acuity, reading speed, and spectacle independence(all P<0.05).Conclusion: ZMA00 and FLEX IOL implantation can provide excellent distant and intermediate visual acuity for patients with age-related cataract. ZMA00 IOL is superior to FLEX in terms of near visual acuity.展开更多
首先以Hw ey-Lan L iou眼模型为基础,根据等效性原则,保持该眼模型中自然晶状体屈光度不变,对无穷远点成像。然后利用ZEMAX实现光线追迹的方法,将自然晶状体替换为可调节人工晶状体(accomm odative intraocu lar lens,A IOL),结合对人...首先以Hw ey-Lan L iou眼模型为基础,根据等效性原则,保持该眼模型中自然晶状体屈光度不变,对无穷远点成像。然后利用ZEMAX实现光线追迹的方法,将自然晶状体替换为可调节人工晶状体(accomm odative intraocu lar lens,A IOL),结合对人眼成像质量影响的分析,研究了A IOL在眼内的移动度、材料、中心厚度、结构、光学面非球面性等因素对其屈光调节力的影响。结果表明:A IOL移动度对其调节力贡献最大,材料、中心厚度、结构对调节力基本无影响;具有非球面光学面的A IOL调节力相对较大。展开更多
文摘Background The TetraFlex accommodating intraocular lens （IOL） was designed to supply the patients both satisfied far and near vision after cataract surgery.So we need to evaluate the safety, distance and near visual acuity, subjective accommodation and IOL mobility with the TetraFlex accommodating IOL implantation.Methods Fifty eyes of 42 study-eligible cataract patients, who gave informed consent at a single eye clinic in China over a 10-month period, underwent phacoemulsification with TetraFlex IOL implantation.At three months postoperation,uncorrected visual acuities （UCVA）, best corrected visual acuities （BCVA）, distance-corrected near visual acuities （DCNVA）, subjective accommodation using the defocus method, and pilocarpine-induced IOL mobility were measured.Results No postoperative complications were noted in the study.Three months postoperation UCVA and BCVA were 20/40 or bettter in 82% （41/50） and 92% （46/50） of eyes, respectively; 66% （33/50） of the eyes had DCNVA of Jager （J） 4or better at 3 months.In addition, the mean subjective accommodation was （0.94±0.61） diopters （D） （range from 0.50 to 1.50 D） and pilocarpine-induced IOL mobility was （337±124） μm （range from 121 to 501 μm） with the TetraFlex.High relationship （r2=0.901, P 〈0.01） was found between these two measurements.Conclusion Implantation of the TetraFlex is safe and leads to excellent uncorrected distance vision and good uncorrected near vision.
文摘Purpose: To assess the visual outcome after implantation of the new Hydrophylic IOL type 41 B/G accommodating intraocular lens (AIOL). Methods: The presented lens was implanted during cataract surgery. All patients were offered follow-ups, allowing two postoperative measurements to be performed at 3 months and between 2020 and 2021. The mean time between lens implantation and last follow-up was 5.3 years (min. 1 year, max. 10 years). Excluded were patients with age-related macular degeneration or amblyopia. Patients with a foreign lens implanted into the second eye were included in a separate control group. Corrected distance (CDVA) and uncorrected distance visual acuity (UDVA) at 5 m, and corrected near (CNVA) and uncorrected near visual acuity (UNVA) at 40 cm were assessed. Furthermore, the postoperative spherical equivalent (SE), the dependence on spectacles and the occurrence of optical phenomena were evaluated. Results: The final study cohort consists of 65 patients with 119 implanted AIOLs. Significantly better visual results were obtained in both postoperative follow-ups compared with the preoperative results. The mean values of the last follow-up for the UNVA, CNVA, UDVA, and CDVA were 0.107 ± 0.10;0.039 ± 0.08;0.097 ± 0.11;and 0.040 ± 0.09 logMAR, respectively. Visual outcomes remained on a high level for up to 10 years and showed significantly better results compared to the control group. Postoperative SE was significantly improved. Nearly 70% of patients were no longer dependent on glasses. Furthermore, the occurrence of disturbing optical phenomena was denied by all patients. Conclusion: The results of this AIOL are particularly promising, especially since gratifying visual results could still be measured 10 years after implantation.
文摘Purpose:.To compare early visual function between patients undergoing phacoemulsification combined with multifocal and accommodative intraocular lens implantation.Methods: A total of 112 patients with age-related cataract undergoing phacoemulsification in our hospital were recruited for this study and randomly assigned into multifocal(56 eyes;ZAM00 group) and accommodative(56 eyes; FLEX group)intraocular lens groups. Visual acuity and contrast sensitivity were statistically compared between the two groups.Results:.No significant difference was found in uncorrected distant visual acuity between the ZMA00 and FLEX groups at1 week, or 1, 3, and 6 months after operation(all P>0.05).At postoperative 6 months, no statistical significance was noted in distant and intermediate best-corrected visual acuity or in contrast sensitivity between the two groups(all P>0.05). Patients in the ZMA00 group were superior to their counterparts in the FLEX group regarding near best corrected visual acuity, reading speed, and spectacle independence(all P<0.05).Conclusion: ZMA00 and FLEX IOL implantation can provide excellent distant and intermediate visual acuity for patients with age-related cataract. ZMA00 IOL is superior to FLEX in terms of near visual acuity.
