AIM: To examine the refractive prediction error in high myopic eyes after phacovitrectomy.METHODS: This retrospective comparative case series included 91 eyes(18 high myopic eyes and 73 non-high myopic eyes) of 91 pat...AIM: To examine the refractive prediction error in high myopic eyes after phacovitrectomy.METHODS: This retrospective comparative case series included 91 eyes(18 high myopic eyes and 73 non-high myopic eyes) of 91 patients who underwent successful phacovitrectomy(phacoemulsification, intraocular lens implantation, and pars plana vitrectomy). The high myopic eyes were defined as the eye with more than 26.0mm of axial length. The postoperative prediction error of mean error and mean absolute error were evaluated at4 mo postoperatively. Axial length and keratometry measurement were performed preoperatively and 4mo postoperatively using the IOL Master.RESULTS: The refractive outcome after phacovitrectomy showed significantly greater myopic shift in the high myopic eyes [-1.08 ±0.87 diopters(D)] than that in the non-high myopic eyes(-0.43 ±0.63 D, P =0.004). Axial length and keratometric value in the high myopic eyes were significantly increased(P =0.043, 0.037 respectively),whereas those in the non-high myopic group were not significantly increased(P =0.135, 0.347 respectively). The change of the axial length in the myopic eye(0.46±0.28 mm)was greater than that in the non- high myopic eye(0.11 ± 0.34 mm; P 【0.001).CONCLUSION: High myopic eyes showed more myopic shift than non-high myopic eyes after phacovitrectomy.The cause of myopic shift in high myopic eyes seems tobe attributed to actual elongation of the axial length in high myopia.展开更多
Objective: To compare refractive outcomes using the Lenstar optical low-coherence reflectometry (OLCR) biometer in the following cases: phacovitrectomy for epiretinal membranes and macular holes (phacovitrectomy group...Objective: To compare refractive outcomes using the Lenstar optical low-coherence reflectometry (OLCR) biometer in the following cases: phacovitrectomy for epiretinal membranes and macular holes (phacovitrectomy group);sequential cataract surgery after prior vitrectomy (sequential-phaco group);routine cataract surgery (phaco-only group). Methods: This study was a retrospective, consecutive comparative series. Main outcomes were mean prediction error (ME) and mean absolute prediction error (MAE). Secondary out-come was the variance in prediction error. Results: ME was significantly more myopic in the phacovitrectomy group (-0.08 ± 0.77D, mean ± SD, p = 0.04) and the sequentialphaco group (-0.09 ± 0.51D, p = 0.01) compared to the phaco-only group (+0.24 ± 0.53D). MAEs were not statistically different across the 3 groups. The phacovitrectomy group had a wider variance in prediction errors compared to the phaco-only group (p = 0.03). Conclusions: There is a myopic shift of approximately -0.3D in both phacovitrectomy and sequential-phaco cases compared to phaco-only cases when using OLCR-based optical biometry. Phacovitrectomy outcomes are more variable compared to phaco-only eyes.展开更多
AIM:To evaluate the therapeutic effect of combined phacovitrectomy with membrane peeling and intraocular lens(IOL)implantation in patients with severe idiopathic epiretinal membrane(iERM)and concurrent cataract.METHOD...AIM:To evaluate the therapeutic effect of combined phacovitrectomy with membrane peeling and intraocular lens(IOL)implantation in patients with severe idiopathic epiretinal membrane(iERM)and concurrent cataract.METHODS:A total of 34 eyes from 34 patients who underwent phacovitrectomy and epiretinal membrane(ERM)peeling at the First Affiliated Hospital of Zhejiang University between 2015 and 2017.The best-corrected visual acuity(BCVA)and central foveal thickness(CFT)were measured preoperatively and at 1,3,6 mo and 1 y postoperatively.Temporal changes and bivariate correlations of these parameters were analyzed.RESULTS:Mean logMAR BCVA improved and CFT decreased significantly(P<0.001)until 6 mo after surgery.Correlation analysis revealed a positive correlation between preoperative and postoperative logMAR BCVA(r=0.716,P<0.001 at 1 mo,r=0.417,P=0.014 at 3 mo,r=0.359,P=0.037 at 6 mo,and r=0.369,P=0.032 at 12 mo post-op respectively),but preoperative CFT was neither associated with postoperative CFT nor with postoperative logMAR BCVA.There was a positive correlation between CFT and logMAR BCVA at 1 mo(r=0.346,P=0.045),6 mo(r=0.347,P=0.045),and 12 mo(r=0.342,P=0.048)post-operatively.The intraand postoperative complications were relatively mild,and the incidences were generally low.CONCLUSION:For severe iERM patients with significant visual symptoms,combined phacovitrectomy with membrane peeling and IOL implantation is safe and effective in improving BCVA and decreasing CFT.Early surgery in selected patients may help preserving better visual function.展开更多
文摘AIM: To examine the refractive prediction error in high myopic eyes after phacovitrectomy.METHODS: This retrospective comparative case series included 91 eyes(18 high myopic eyes and 73 non-high myopic eyes) of 91 patients who underwent successful phacovitrectomy(phacoemulsification, intraocular lens implantation, and pars plana vitrectomy). The high myopic eyes were defined as the eye with more than 26.0mm of axial length. The postoperative prediction error of mean error and mean absolute error were evaluated at4 mo postoperatively. Axial length and keratometry measurement were performed preoperatively and 4mo postoperatively using the IOL Master.RESULTS: The refractive outcome after phacovitrectomy showed significantly greater myopic shift in the high myopic eyes [-1.08 ±0.87 diopters(D)] than that in the non-high myopic eyes(-0.43 ±0.63 D, P =0.004). Axial length and keratometric value in the high myopic eyes were significantly increased(P =0.043, 0.037 respectively),whereas those in the non-high myopic group were not significantly increased(P =0.135, 0.347 respectively). The change of the axial length in the myopic eye(0.46±0.28 mm)was greater than that in the non- high myopic eye(0.11 ± 0.34 mm; P 【0.001).CONCLUSION: High myopic eyes showed more myopic shift than non-high myopic eyes after phacovitrectomy.The cause of myopic shift in high myopic eyes seems tobe attributed to actual elongation of the axial length in high myopia.
文摘Objective: To compare refractive outcomes using the Lenstar optical low-coherence reflectometry (OLCR) biometer in the following cases: phacovitrectomy for epiretinal membranes and macular holes (phacovitrectomy group);sequential cataract surgery after prior vitrectomy (sequential-phaco group);routine cataract surgery (phaco-only group). Methods: This study was a retrospective, consecutive comparative series. Main outcomes were mean prediction error (ME) and mean absolute prediction error (MAE). Secondary out-come was the variance in prediction error. Results: ME was significantly more myopic in the phacovitrectomy group (-0.08 ± 0.77D, mean ± SD, p = 0.04) and the sequentialphaco group (-0.09 ± 0.51D, p = 0.01) compared to the phaco-only group (+0.24 ± 0.53D). MAEs were not statistically different across the 3 groups. The phacovitrectomy group had a wider variance in prediction errors compared to the phaco-only group (p = 0.03). Conclusions: There is a myopic shift of approximately -0.3D in both phacovitrectomy and sequential-phaco cases compared to phaco-only cases when using OLCR-based optical biometry. Phacovitrectomy outcomes are more variable compared to phaco-only eyes.
文摘AIM:To evaluate the therapeutic effect of combined phacovitrectomy with membrane peeling and intraocular lens(IOL)implantation in patients with severe idiopathic epiretinal membrane(iERM)and concurrent cataract.METHODS:A total of 34 eyes from 34 patients who underwent phacovitrectomy and epiretinal membrane(ERM)peeling at the First Affiliated Hospital of Zhejiang University between 2015 and 2017.The best-corrected visual acuity(BCVA)and central foveal thickness(CFT)were measured preoperatively and at 1,3,6 mo and 1 y postoperatively.Temporal changes and bivariate correlations of these parameters were analyzed.RESULTS:Mean logMAR BCVA improved and CFT decreased significantly(P<0.001)until 6 mo after surgery.Correlation analysis revealed a positive correlation between preoperative and postoperative logMAR BCVA(r=0.716,P<0.001 at 1 mo,r=0.417,P=0.014 at 3 mo,r=0.359,P=0.037 at 6 mo,and r=0.369,P=0.032 at 12 mo post-op respectively),but preoperative CFT was neither associated with postoperative CFT nor with postoperative logMAR BCVA.There was a positive correlation between CFT and logMAR BCVA at 1 mo(r=0.346,P=0.045),6 mo(r=0.347,P=0.045),and 12 mo(r=0.342,P=0.048)post-operatively.The intraand postoperative complications were relatively mild,and the incidences were generally low.CONCLUSION:For severe iERM patients with significant visual symptoms,combined phacovitrectomy with membrane peeling and IOL implantation is safe and effective in improving BCVA and decreasing CFT.Early surgery in selected patients may help preserving better visual function.
