Abstract: Objective To evaluate the application effect of EyeSi cataract phacoemulsification training system (EyeSi system) in cataract surgery training for ophthalmologists. Design Self-controlled study. Participants Ten Ophthalmologists under specialist training in Peking University Third hospital. Methods Using EyeSi system for cataract surgery training and the evaluation of capsulorhexis steps were recorded. Five cataract surgeons with senior professional titles scoring the trainees’ operation videos before and after the training according to the blind method of the International Council of Ophthalmology Ophthalmology Surgical Competency Assessment Rubric (ICO-OSCAR). The trainees filled in the self-evaluation scale. Main Outcome Measures Assessment results of the EyeSi system, the ratings from the cataract specialists and the trainees'  self-evaluation scale. Results EyeSi system showed that after training the uniformity of capsulorhexis radius was improved from (24.51 ± 30.58)% to (95.90±7.00)% (t=-7.600，P=0.000), suggesting that the capsulorhexis was more round. The distance from the center of the capsulorhexis decreased from (0.38±0.14) mm to (0.11±0.06) mm (t=4.726，P=0.001), suggesting that the capsulorhexis was more centered. The operation time was shortened from (138.12±34.92) s to (84.15±27.34) s (t=3.813, P=0.004), indicating that the operation was more skilled. The total score increased from (44.10±31.08) to (95.30±4.40) (t=-5.523，P=0.000). The ICO-OSCAR showed that the performance of capsulorhexis was improved from (3.70±0.59) before training to (4.44±0.31) after training (t=-3.922, P=0.004). The score of capsulorhexis opening shape was improved from (3.74±0.71) to (4.14±0.30), but the difference was not statistically significant (t=-1.519，P=0.163). In addition to the obvious progress in the operation of capsulorhexis flap and capsulorhexis shape, the students' self-evaluation scale showed other surgical skills such as intraocular lens implantation, instrument stability, reducing tissue traction, protecting posterior capsule and operation speed, were also significantly improved(all P<0.05). Conclusion EyeSi system can be effective in cataract surgery training represented by the procedure of capsulorhexis. (Ophthalmol CHN, 2022, 31: 390-393)

Key words: cataract, surgical training