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| Study of Complications in 8 600 Eyes after Small Incision Lenticule Extraction |
| Yunchuan Liu, Zhen Hou, Hongjuan Wang, Ping Zhou |
| Jinan Aier Ophthalmology Hospital, Jinan 250000, China |
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Abstract Objective: To study and analyze the postoperative complications of small incision lenticule extraction (SMILE). Methods: In this retrospective case series study, 4 386 patients (8 600 eyes) with complete SMILE surgical correction data in Jinan Aier Eye Hospital from March 2015 to October 2019 were selected. During and after the operation, the occurrence of complications was analyzed, and a questionnaire survey was conducted. Visual quality was assessed based on the questionnaire survey. Results: Intraoperative complications were observed in 244 eyes (2.84%), including 12 eyes (0.14%) with negative pressure suction ring loss, 154 eyes (1.80%) with an opaque bubble layer (OBL), 25 eyes (0.29%) with microincision hemorrhage, 1 eye (0.01%) with difficulty in finding the corneal matrix lens, and 33 eyes (0.38%) with unplanned lens separation. In addition, there was lens residue in 4 eyes (0.04%), incision tear in 13 eyes (0.15%), and a scanned black area in 2 eyes (0.02%). Postoperative complications were observed in 17 eyes (0.20%), including diffuse lamellar keratitis in the early postoperative period (0.09%), immune keratitis in the middle postoperative period (0.10%), and no intercorneal bacterial infection in any eyes. Three months after surgery, 26 eyes (0.30%) were overcorrected >0.75 D and 1 eye (0.01%) was undercorrected >0.75 D. One eye (0.01%) needed to undergo a second augmentation operation. Postoperative visual quality abnormalities were mainly fog, glare, and halo in the initial postoperative period, which significantly improved over time. At 6 months after surgery, 99.30% of patients were very satisfied as noted in the comprehensive evaluation of the operation. Conclusions: SMILE surgery has few complications in the treatment of myopia, and there was no serious complication affecting vision in this study. SMILE surgery is safe and effective, and patient satisfaction is high.
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Received: 16 November 2020
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Corresponding Authors:
Yunchuan Liu, Jinan Aier Ophthalmology Hospital, Jinan 250000, China (Email: doctorliuyck@163.com)
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