AIM： To evaluate corneal astigmatism after phacoemulsification using 2.2 mm or 1.8 mm clear corneal micro-incisions and its effects on visual function.METHODS： Sixty cases （60 eyes） with cataract were randomly div...AIM： To evaluate corneal astigmatism after phacoemulsification using 2.2 mm or 1.8 mm clear corneal micro-incisions and its effects on visual function.METHODS： Sixty cases （60 eyes） with cataract were randomly divided into groups A （n=30） and B （n=30） respectively underwent 2.2 mm and 1.8 mm clear corneal tunnel incision phacoemulsification combined with folding intraocular lens implantation from the time direction of 11：00. On day 1 and at 1, 4, and 6wk after operation, patients’ vision was measured and both the corneal curvature and corneal thickness （CT） were recorded using Pentacam.RESULTS： The measured surgery-induced astigmatism （SIA） in both groups A and B peaked on day 1 after operation, and then gradually decreased and eventually stabilized in week 4. No statistically significant difference was found in corneal astigmatism between two groups （P〉0.05）. The measured corneal astigmatism at 4wk and 6wk postoperatively were 0.28±0.09 D and 0.27±0.10 D for groups A and 0.27±0.09 D and 0.25±0.10 D for groups B without statistically significant difference （P〉0.05）. In addition, no significant differences in visual acuity and CT were found between groups A and B before or after operation.CONCLUSION： Both 2.2 mm and 1.8 mm micro-incision cataract surgeries result in relatively small SIA with no difference in visual function and corneal astigmatism between two surgery approaches. Thus, the two types of surgical systems are safe and efficient for cataract treatment, by which satisfactory uncorrected visual acuity can be regained early postoperatively.展开更多
Purpose:To evaluate patient satisfaction after implantation of the Tecnis Symfony multifocal intraocular lens(MIOL).Methods:120 eyes of 60 subjects with senile cataract were bilaterally implanted with the Tecnis Symfo...Purpose:To evaluate patient satisfaction after implantation of the Tecnis Symfony multifocal intraocular lens(MIOL).Methods:120 eyes of 60 subjects with senile cataract were bilaterally implanted with the Tecnis Symfony IOL.Follow-up examination was performed 6 months postoperatively.Main outcome measures included uncorrected and corrected distance and near visual acuity,manifest refraction,and visual quality metrics.According to their subjective symptoms patient were divided in two groups:satisfied and unsatisfied.Results:Uncorrected intermediate(0.15±0.11 vs 0.18±0.01,P=0.04)and near(0.26±0.12 vs 0.31±0.11,P=0.04)(UIVA,UNVA)log MAR visual acuity was significantly better,cylindrical error less(0.31±0.36 vs 0.67±0.29,P=0.05),axial length(AL)smaller(23.68±1.3 vs 24.22±1.6,P=0.05),Strehl ratio higher(0.08±0.08 vs 0.05±0.04,P=0.03)and mesopic pupil larger(4.3±1.1 vs 3.7±1.05,P=0.01)among satisfied patients.Residual cylinder,Strehl ratio,halos,mesopic pupil diameter and UNVA were significant predictors of patient satisfaction.Uncorrected distance visual acuity,higher order Strehl ratio and pupil diameter were significant predictors of halos.Near visual acuity significantly correlated(P=0.018,R=0.22)with axial length.Conclusions:Uncorrected cylindrical error,poor reading quality,larger pupil and halos seem to be the most disturbing factors for patients implanted with the Tecnis Symfony IOL.展开更多
文摘AIM： To evaluate corneal astigmatism after phacoemulsification using 2.2 mm or 1.8 mm clear corneal micro-incisions and its effects on visual function.METHODS： Sixty cases （60 eyes） with cataract were randomly divided into groups A （n=30） and B （n=30） respectively underwent 2.2 mm and 1.8 mm clear corneal tunnel incision phacoemulsification combined with folding intraocular lens implantation from the time direction of 11：00. On day 1 and at 1, 4, and 6wk after operation, patients’ vision was measured and both the corneal curvature and corneal thickness （CT） were recorded using Pentacam.RESULTS： The measured surgery-induced astigmatism （SIA） in both groups A and B peaked on day 1 after operation, and then gradually decreased and eventually stabilized in week 4. No statistically significant difference was found in corneal astigmatism between two groups （P〉0.05）. The measured corneal astigmatism at 4wk and 6wk postoperatively were 0.28±0.09 D and 0.27±0.10 D for groups A and 0.27±0.09 D and 0.25±0.10 D for groups B without statistically significant difference （P〉0.05）. In addition, no significant differences in visual acuity and CT were found between groups A and B before or after operation.CONCLUSION： Both 2.2 mm and 1.8 mm micro-incision cataract surgeries result in relatively small SIA with no difference in visual function and corneal astigmatism between two surgery approaches. Thus, the two types of surgical systems are safe and efficient for cataract treatment, by which satisfactory uncorrected visual acuity can be regained early postoperatively.
文摘Purpose:To evaluate patient satisfaction after implantation of the Tecnis Symfony multifocal intraocular lens(MIOL).Methods:120 eyes of 60 subjects with senile cataract were bilaterally implanted with the Tecnis Symfony IOL.Follow-up examination was performed 6 months postoperatively.Main outcome measures included uncorrected and corrected distance and near visual acuity,manifest refraction,and visual quality metrics.According to their subjective symptoms patient were divided in two groups:satisfied and unsatisfied.Results:Uncorrected intermediate(0.15±0.11 vs 0.18±0.01,P=0.04)and near(0.26±0.12 vs 0.31±0.11,P=0.04)(UIVA,UNVA)log MAR visual acuity was significantly better,cylindrical error less(0.31±0.36 vs 0.67±0.29,P=0.05),axial length(AL)smaller(23.68±1.3 vs 24.22±1.6,P=0.05),Strehl ratio higher(0.08±0.08 vs 0.05±0.04,P=0.03)and mesopic pupil larger(4.3±1.1 vs 3.7±1.05,P=0.01)among satisfied patients.Residual cylinder,Strehl ratio,halos,mesopic pupil diameter and UNVA were significant predictors of patient satisfaction.Uncorrected distance visual acuity,higher order Strehl ratio and pupil diameter were significant predictors of halos.Near visual acuity significantly correlated(P=0.018,R=0.22)with axial length.Conclusions:Uncorrected cylindrical error,poor reading quality,larger pupil and halos seem to be the most disturbing factors for patients implanted with the Tecnis Symfony IOL.
