AIM: To evaluate the moderate-term success and calculate the mean dose-effect ratio in large-angle esotropic patients who underwent three muscle surgery.METHODS: In a retrospective study, we reviewed the medical recor...AIM: To evaluate the moderate-term success and calculate the mean dose-effect ratio in large-angle esotropic patients who underwent three muscle surgery.METHODS: In a retrospective study, we reviewed the medical records of 37 patients with large-angle esotropia who underwent bilateral medial rectus recession and one lateral rectus resection. Sex, age at surgery time, amount of recessed or resected muscles in millimeter(mm), preand postoperative alignment in prism diopter(D), dose/response ratio, and presence of amblyopia and other associated vertical deviations were recorded.RESULTS: The mean age of subjects at surgery was 12.2±12.3 y(range: 1-57). The mean preoperative deviation of 70.4±8.1 D(range: 60-85 D) decreased to a mean of 5.4±8.1 D(range: 0-30 D) postoperatively(P<0.005). Successful alignment was achieved in 30 of 37 patients(81%) at a mean follow-up of 15.7±20.1 mo(range: 3-90). The mean amount of recession and resection was 17.59±1.29 mm, and a mean dose-response ratio of 3.79±81(range: 2.83-4.66) was determined.CONCLUSION: Three-muscle surgery for large-angle esotropia results in good moderate-term outcomes without high rates of overcorrection or undercorrection.展开更多
The metalens has attracted remarkable attention due to its ultra-thin and ultra-light characteristics,which indicate great potential for compact imaging.However,the limited efficiency at a large angle incidence severe...The metalens has attracted remarkable attention due to its ultra-thin and ultra-light characteristics,which indicate great potential for compact imaging.However,the limited efficiency at a large angle incidence severely hinders the application of wide-angle focusing and imaging,which is pursued in the fast-developing imaging systems.Therefore,new strategies to improve the lens performance at large incident angles are in demand.In this work,we propose tilted structures for largeangle focusing with improved efficiency.Metalenses based on dynamic phase and geometric phase are designed and systematically characterized by numerical simulations.We show that tilted structures of unit cells significantly improve the lens performance at oblique incidences.In detail,the focusing efficiency of the metalens with tilted structures is increased over 25%at 30°incidence,as well as the modulation transfer function.In addition,we develop a hybrid metalens array achieving highly efficient wide-angle imaging up to 120°.We believe this design provides a feasible route toward wide-field and high-performance imaging applications.展开更多
文摘AIM: To evaluate the moderate-term success and calculate the mean dose-effect ratio in large-angle esotropic patients who underwent three muscle surgery.METHODS: In a retrospective study, we reviewed the medical records of 37 patients with large-angle esotropia who underwent bilateral medial rectus recession and one lateral rectus resection. Sex, age at surgery time, amount of recessed or resected muscles in millimeter(mm), preand postoperative alignment in prism diopter(D), dose/response ratio, and presence of amblyopia and other associated vertical deviations were recorded.RESULTS: The mean age of subjects at surgery was 12.2±12.3 y(range: 1-57). The mean preoperative deviation of 70.4±8.1 D(range: 60-85 D) decreased to a mean of 5.4±8.1 D(range: 0-30 D) postoperatively(P<0.005). Successful alignment was achieved in 30 of 37 patients(81%) at a mean follow-up of 15.7±20.1 mo(range: 3-90). The mean amount of recession and resection was 17.59±1.29 mm, and a mean dose-response ratio of 3.79±81(range: 2.83-4.66) was determined.CONCLUSION: Three-muscle surgery for large-angle esotropia results in good moderate-term outcomes without high rates of overcorrection or undercorrection.
基金This work was supported by the National Key Research and Development Program of China(No.2022YFA1404301)National Natural Science Foundation of China(Nos.62325504,62305149,92250304,and 62288101).
文摘The metalens has attracted remarkable attention due to its ultra-thin and ultra-light characteristics,which indicate great potential for compact imaging.However,the limited efficiency at a large angle incidence severely hinders the application of wide-angle focusing and imaging,which is pursued in the fast-developing imaging systems.Therefore,new strategies to improve the lens performance at large incident angles are in demand.In this work,we propose tilted structures for largeangle focusing with improved efficiency.Metalenses based on dynamic phase and geometric phase are designed and systematically characterized by numerical simulations.We show that tilted structures of unit cells significantly improve the lens performance at oblique incidences.In detail,the focusing efficiency of the metalens with tilted structures is increased over 25%at 30°incidence,as well as the modulation transfer function.In addition,we develop a hybrid metalens array achieving highly efficient wide-angle imaging up to 120°.We believe this design provides a feasible route toward wide-field and high-performance imaging applications.
