Abstract:  Objective To evaluate the postoperative effects after femtosecond laser-assisted phacoemulsfication with trifocal intraocular lens(TIOL) implantation in patients with cataract after previous vitrectomy surgery. Design Retrospective case series. Participants 14 cataract patients (14 eyes) after PPV surgery were performed with LenSx femtosecond laser assisted phacoemulsification combined with diffraction trifocal IOL (AT LISA tri 839 MP) implantation in Beijing Aier Intech Eye Hospital. Methods The clinical data of patients were retrospectively analyzed. The average follow-up time was 12.5±7.13 months (3-24 months). The visual function index scale (VF-14) questionnaire and defocus curve were performed 3 months after surgery. Main Outcome Measures The distance, intermediate and near visual acuity, equivalent spherical mirror degree (SE), defocus curve, and patient satisfaction at 3 months after surgery. Results The average time from PPV to cataract surgery was 4.46±4.76 years. One case was loss of follow-up after cataract surgery. At the last follow-up, the LogMAR visual acuity of 10/13 eyes (76.9%) was ≤0.1. SE was < 1.0D in 11/13 eyes (84.6%). The defocus curve was smooth between +1.00 D and -4.00 D. 12/13 eyes (92.3%) were satisfied for the far and intermediate vision and 11/13 eyes (84.6%) were satisfied for reading vision. But 11/13 eyes (84.6%) complained with glares and halo. Conclusion The study of this small sample shows that femtosecond laser-assisted phacoemulsification can improve visual quality of cataract patients after PPV, and diffractive trifocal IOL can provide good distance, intermediate and near vision for patients with cataract after vitrectomy. However, it should be strictly selected and applied with caution before surgery. (Ophthalmol CHN, 2020, 29: 288-293)

Key words: vitrectomy, intraocular lens implantation, trifocal IOL, visual quality