AIM： To evaluate the clinical efficacy and safety of optic capture in pediatric cataract surgery.·METHODS： Searches of peer-reviewed literature were conducted in Pub Med, Embase and the Cochrane Library. The se...AIM： To evaluate the clinical efficacy and safety of optic capture in pediatric cataract surgery.·METHODS： Searches of peer-reviewed literature were conducted in Pub Med, Embase and the Cochrane Library. The search terms were ＂optic capture＂ and ＂cataract＂. The retrieval period ended in December 2014.Relevant randomized controlled trials（RCTs）, case-control studies and cohort studies were included. Meta-analyses were performed. Pooled weighted mean differences and risk ratios with 95% confidence intervals were estimated.· RESULTS： Ten studies involving 282 eyes were included, 5 of which were RCTs involving 194 eyes. The application of optic capture significantly reduced both opacification of the visual axis（RR： 0.12; 95% CI： 0.02 to0.85; P =0.03） and occurrence of geometric decentration（RR： 0.09; 95% CI： 0.02 to 0.46; P =0.004）. But it did not significantly affect best corrected visual acuity（BCVA）（WMD：-0.01; 95% CI：-0.07 to 0.05; P =0.75） and influence the occurrence of posterior synechia（RR： 1.53;95% CI： 0.84 to 2.77; P =0.17）. Deposits in the anterior intraocular lens were significantly increased in the optic capture group early after surgery（RR： 1.40; 95% CI： 1.05 to 1.86; P =0.02） and at the last follow-up（RR： 2.30;95% CI： 1.08 to 4.92; P =0.03）. The quality of the evidence was assessed as high.· CONCLUSION： The application of optic capture significantly reduces opacification of visual axis and occurrence of geometric decentration but do not significantly improve BCVA with notable safety.展开更多
Background:To assess the safety and efficacy of supracapsular implantation with optic capture of the posterior chamber intraocular lens in Chinese children with aphakic after traumatic cataract.Methods:It was a retros...Background:To assess the safety and efficacy of supracapsular implantation with optic capture of the posterior chamber intraocular lens in Chinese children with aphakic after traumatic cataract.Methods:It was a retrospective case series study.Fifteen cases(15 eyes)Chinese children received supracapsular implantation with optic capture of the posterior chamber intraocular lens.Pre-and post-operative visual acuities were recorded.Intra-and post-operative complications were observed.The follow-up period ranged from 7 to 43(28.7±7.2)months.Results:Implantation of optic capture of the posterior chamber intraocular lens was successfully performed in 15 eyes.The best corrected visual acuity(BCVA)ranged from 0.3 to 1.0(0.61±0.19).No optic axis opaque was found in 15 eyes with optic capture.The major complications of optic capture were iris posterior synechia and intraocular lens(IOL)precipitates.Intraocular dislocation was found in one case three weeks after the operation.Conclusions:Supracapsular implantation with optic capture of the posterior chamber intraocular lens is safe and effective for the treatment of traumatic cataract in Chinese children.展开更多
Electron cyclotron emission imaging（ECEI） can provide measurements of 2D electron temperature fluctuation with high temporal and spatial resolution in magnetic fusion plasma devices. Two ECEI systems located in diff...Electron cyclotron emission imaging（ECEI） can provide measurements of 2D electron temperature fluctuation with high temporal and spatial resolution in magnetic fusion plasma devices. Two ECEI systems located in different toroidal ports with 67.5 degree separation have been implemented on J-TEXT to study the 3D structure of magnetohydrodynamic（MHD） instabilities. Each system consists of 12（vertical） × 16（horizontal） = 192 channels and the image of the 2nd harmonic X-mode electron cyclotron emission can be captured continuously in the core plasma region. The field curvature adjustment lens concept is developed to control the imaging plane for receiving optics of the ECEI systems. Field curvature of the image can be controlled to match the emission layer. Consequently, a quasi-3D image of the MHD instability in the core of the plasma has been achieved.展开更多
文摘AIM： To evaluate the clinical efficacy and safety of optic capture in pediatric cataract surgery.·METHODS： Searches of peer-reviewed literature were conducted in Pub Med, Embase and the Cochrane Library. The search terms were ＂optic capture＂ and ＂cataract＂. The retrieval period ended in December 2014.Relevant randomized controlled trials（RCTs）, case-control studies and cohort studies were included. Meta-analyses were performed. Pooled weighted mean differences and risk ratios with 95% confidence intervals were estimated.· RESULTS： Ten studies involving 282 eyes were included, 5 of which were RCTs involving 194 eyes. The application of optic capture significantly reduced both opacification of the visual axis（RR： 0.12; 95% CI： 0.02 to0.85; P =0.03） and occurrence of geometric decentration（RR： 0.09; 95% CI： 0.02 to 0.46; P =0.004）. But it did not significantly affect best corrected visual acuity（BCVA）（WMD：-0.01; 95% CI：-0.07 to 0.05; P =0.75） and influence the occurrence of posterior synechia（RR： 1.53;95% CI： 0.84 to 2.77; P =0.17）. Deposits in the anterior intraocular lens were significantly increased in the optic capture group early after surgery（RR： 1.40; 95% CI： 1.05 to 1.86; P =0.02） and at the last follow-up（RR： 2.30;95% CI： 1.08 to 4.92; P =0.03）. The quality of the evidence was assessed as high.· CONCLUSION： The application of optic capture significantly reduces opacification of visual axis and occurrence of geometric decentration but do not significantly improve BCVA with notable safety.
文摘Background:To assess the safety and efficacy of supracapsular implantation with optic capture of the posterior chamber intraocular lens in Chinese children with aphakic after traumatic cataract.Methods:It was a retrospective case series study.Fifteen cases(15 eyes)Chinese children received supracapsular implantation with optic capture of the posterior chamber intraocular lens.Pre-and post-operative visual acuities were recorded.Intra-and post-operative complications were observed.The follow-up period ranged from 7 to 43(28.7±7.2)months.Results:Implantation of optic capture of the posterior chamber intraocular lens was successfully performed in 15 eyes.The best corrected visual acuity(BCVA)ranged from 0.3 to 1.0(0.61±0.19).No optic axis opaque was found in 15 eyes with optic capture.The major complications of optic capture were iris posterior synechia and intraocular lens(IOL)precipitates.Intraocular dislocation was found in one case three weeks after the operation.Conclusions:Supracapsular implantation with optic capture of the posterior chamber intraocular lens is safe and effective for the treatment of traumatic cataract in Chinese children.
基金supported by the National Magnetic Confinement Fusion Science Program of China under Grant Nos.2013GB106002 and 2014GB109002National Natural Science Foundation of China under Grant Nos.10990210 and 11275200
文摘Electron cyclotron emission imaging（ECEI） can provide measurements of 2D electron temperature fluctuation with high temporal and spatial resolution in magnetic fusion plasma devices. Two ECEI systems located in different toroidal ports with 67.5 degree separation have been implemented on J-TEXT to study the 3D structure of magnetohydrodynamic（MHD） instabilities. Each system consists of 12（vertical） × 16（horizontal） = 192 channels and the image of the 2nd harmonic X-mode electron cyclotron emission can be captured continuously in the core plasma region. The field curvature adjustment lens concept is developed to control the imaging plane for receiving optics of the ECEI systems. Field curvature of the image can be controlled to match the emission layer. Consequently, a quasi-3D image of the MHD instability in the core of the plasma has been achieved.
