AIM:To investigate the effect of Cionni-modified capsular tension ring(CTR)implantation in patients with severely traumatic subluxated cataracts.METHODS:All patients who totally had traumatic cataracts and lost zonule...AIM:To investigate the effect of Cionni-modified capsular tension ring(CTR)implantation in patients with severely traumatic subluxated cataracts.METHODS:All patients who totally had traumatic cataracts and lost zonule support and underwent cataract surgery were retrospectively analyzed.Corrected distance visual acuity(CDVA),extent of zonulysis,intraocular lens(IOL)position,intraoperative presentation,and complications were assessed.The primary outcomes included IOL centration stability and other postoperative complications.RESULTS:Twenty patients(20 eyes)were included in this study.The mean age in this study was 58.0±11.3y,and the average follow-up time was 17.3±12.8mo.Capsule bags were saved by Cionni-modified CTR.Nine eyes(45%)underwent simultaneously anterior vitrectomy due to the presence of vitreous in the anterior chamber.The preoperative mean CDVA was 0.83±0.24 log MAR,and the postoperative average CDVA was 0.23±0.30 log MAR(P<0.05).The horizontal and vertical IOL decentration after surgery was 0.27±0.12 mm and 0.41±0.19 mm,respectively;the vertical and horizontal IOL tilt after surgery was 5.5°±2.5°and 6.1°±2.2°,respectively.None of the eyes had obvious IOL decentration during the follow-up time.Eight eyes(40%)had posterior capsule opacification(PCO)that was severe enough to cause poor vision.Neodymium:YAG laser capsulotomy were performed on these eyes when the CTR was stabilized.CONCLUSION:With the help of Cionni-modified CTR,capsular bag preservation and better IOL concentration can be achieved without major complications in patients with severely traumatic subluxated cataracts.展开更多
The control of the stability of the filament tension is one of the crucial techniques ensuring the component quality of the composite materials. The open-loop tension control system, with industrial control computer a...The control of the stability of the filament tension is one of the crucial techniques ensuring the component quality of the composite materials. The open-loop tension control system, with industrial control computer as the core, magnetic particle clutch as the actuator, equipped with compensation technique is researched and manufactured. It can assure the tension control stability of the yarn in filament winding process and increase the control precision of the whole system.展开更多
Background:An ideal tension-relieving suture should be efficient for>3 months to retrieve normal tensile strength.Most preexisting suturing techniques provided tension elimination followed by relapse and scar proli...Background:An ideal tension-relieving suture should be efficient for>3 months to retrieve normal tensile strength.Most preexisting suturing techniques provided tension elimination followed by relapse and scar proliferation due to absorption and cut-through of the sutures.This study introduces a simple but effective suture technique developed by a senior author(ZYX)to solve this problem.Methods:A total of 120 patients with pathological scar(PS)had intervention treatment with the proposed suturing strategy at three centers from January 2018 to January 2021.A slowly absorbable 2-0 barbed suturewas used for subcutaneous tension relieving with a set-back from the wound edge and a horizontal interval between proposed inserting points of 1 cm.The Patient and Observer Scar Assessment Scale(POSAS),scar width,perfusion and eversion of the wound edge were evaluated at 3-,6-and 12-month follow-up.The time needed to place the tension-relieving suture was recorded and relapse was monitored for 18 months postoperatively.Results:In total,76 trunks,32 extremities and 12 cervical PS were included,with an average subcutaneous tension-relieving suture time of 5 min.The Patient and Observer Scar Assessment Scale(POSAS)score decreased from 84.70±7.06 preoperatively to 28.83±3.09,26.14±1.92 and 24.71±2.00 at 3,6 and 12 months postoperatively,respectively(p<0.0001).The scar widths were 0.17±0.08,0.25±0.09 and 0.33±0.10 cm,respectively,with perfusion significantly decreased from 213.64±14.97 to 112.23±8.18 at 6 months(p<0.0001).The wound edge flattened out during the first 3 months in most cases with only two scar relapses.Conclusions:Zhang’s suture technique provides a rapid and long-lasting tension-relieving effect with ideal scar appearances and lower relapse rates in the surgical management of PS.展开更多
基金Supported by the National Natural Science Foundation of China(No.82070968)China Postdoctoral Science Foundation(No.2022M712386)+4 种基金Tianjin Health Research Project(No.TJWJ2022MS040,No.ZC20166)Nankai University Eye Institute(No.NKYKK202203,No.NKYKK202206)Tianjin Eye Hospital Research Project(No.YKYB1902)Natural Science Foundation of Tianjin(No.20JCQNJC01860)Tianjin Key Medical Discipine(Specialty)Construction Project(No.TJYXZDXK-016A)。
文摘AIM:To investigate the effect of Cionni-modified capsular tension ring(CTR)implantation in patients with severely traumatic subluxated cataracts.METHODS:All patients who totally had traumatic cataracts and lost zonule support and underwent cataract surgery were retrospectively analyzed.Corrected distance visual acuity(CDVA),extent of zonulysis,intraocular lens(IOL)position,intraoperative presentation,and complications were assessed.The primary outcomes included IOL centration stability and other postoperative complications.RESULTS:Twenty patients(20 eyes)were included in this study.The mean age in this study was 58.0±11.3y,and the average follow-up time was 17.3±12.8mo.Capsule bags were saved by Cionni-modified CTR.Nine eyes(45%)underwent simultaneously anterior vitrectomy due to the presence of vitreous in the anterior chamber.The preoperative mean CDVA was 0.83±0.24 log MAR,and the postoperative average CDVA was 0.23±0.30 log MAR(P<0.05).The horizontal and vertical IOL decentration after surgery was 0.27±0.12 mm and 0.41±0.19 mm,respectively;the vertical and horizontal IOL tilt after surgery was 5.5°±2.5°and 6.1°±2.2°,respectively.None of the eyes had obvious IOL decentration during the follow-up time.Eight eyes(40%)had posterior capsule opacification(PCO)that was severe enough to cause poor vision.Neodymium:YAG laser capsulotomy were performed on these eyes when the CTR was stabilized.CONCLUSION:With the help of Cionni-modified CTR,capsular bag preservation and better IOL concentration can be achieved without major complications in patients with severely traumatic subluxated cataracts.
文摘The control of the stability of the filament tension is one of the crucial techniques ensuring the component quality of the composite materials. The open-loop tension control system, with industrial control computer as the core, magnetic particle clutch as the actuator, equipped with compensation technique is researched and manufactured. It can assure the tension control stability of the yarn in filament winding process and increase the control precision of the whole system.
基金supported by the National Natural Science Foundation of China(grant number:82172222)the Outstanding Professional and Technical Leader Program of the Shanghai Municipal Science and Technology Commission(18XD1423700)+2 种基金the Shanghai Health Industry Clinical Research Special Project(20204Y0443)the Cross Research Project of Ninth People’s Hospital,Shanghai Jiao Tong University School of Medicine(JYJC202009)Shanghai Municipal Education Commission-Gaofeng Clinical Medicine Grant Support(Grant number:20152227).
文摘Background:An ideal tension-relieving suture should be efficient for>3 months to retrieve normal tensile strength.Most preexisting suturing techniques provided tension elimination followed by relapse and scar proliferation due to absorption and cut-through of the sutures.This study introduces a simple but effective suture technique developed by a senior author(ZYX)to solve this problem.Methods:A total of 120 patients with pathological scar(PS)had intervention treatment with the proposed suturing strategy at three centers from January 2018 to January 2021.A slowly absorbable 2-0 barbed suturewas used for subcutaneous tension relieving with a set-back from the wound edge and a horizontal interval between proposed inserting points of 1 cm.The Patient and Observer Scar Assessment Scale(POSAS),scar width,perfusion and eversion of the wound edge were evaluated at 3-,6-and 12-month follow-up.The time needed to place the tension-relieving suture was recorded and relapse was monitored for 18 months postoperatively.Results:In total,76 trunks,32 extremities and 12 cervical PS were included,with an average subcutaneous tension-relieving suture time of 5 min.The Patient and Observer Scar Assessment Scale(POSAS)score decreased from 84.70±7.06 preoperatively to 28.83±3.09,26.14±1.92 and 24.71±2.00 at 3,6 and 12 months postoperatively,respectively(p<0.0001).The scar widths were 0.17±0.08,0.25±0.09 and 0.33±0.10 cm,respectively,with perfusion significantly decreased from 213.64±14.97 to 112.23±8.18 at 6 months(p<0.0001).The wound edge flattened out during the first 3 months in most cases with only two scar relapses.Conclusions:Zhang’s suture technique provides a rapid and long-lasting tension-relieving effect with ideal scar appearances and lower relapse rates in the surgical management of PS.
