ĐÁNH GIÁ THỊ LỰC VÀ KHÚC XẠ TỒN DƯ SAU PHẪU THUẬT PHACO ĐẶT THỂ THỦY TINH NHÂN TẠO TRÊN MẮT ĐÃ PHẪU THUẬT LASIK ĐIỀU TRỊ TẬT KHÚC XẠ

Abstract

Purpose: To evaluate visual acuity and refractive error after Phaco IOL in eyes with previous laser refractive surgery. Subjects and methods: 26 eyes of 19 patients undergone Phaco IOL in on demand department of VNIO. Exclusion criteria: the patients did not agree to participate and eyes with a history of retinal detachment, glaucoma, corneal disease, macular degeneration, diabetic retinopathy, neuro-ophthalmic disease, ocular inflammation, and previous ocular surgery. Measurement refractive error by machine after surgery 1 week, 1 month, 3 months. Measurement uncorrected visual acuity and corrected visual acuity after 1 week, 1 month, 3 months. Results and discussion: The mean age was 43.38 ± 9.81. The lowest age was 25 years old; the highest was 66 years old. The average time of Lasik surgery was 13.90 ± 4.72 years. Preoperative visual acuity was very low below 20/60. Mean axial length: 29.22 ± 2.79 mm. Average corneal power: 37.21 ± 2.77 D. Preoperative corneal astigmatism: 1.77 ± 1.24. Mean IOL power: 16.54 ± 5.07. Distant visual acuity after surgery gradually increased after 1 week, 1 month, 3 months with the average uncorrected visual acuity log MAR at 3 months after surgery was 0.46 ± 0.19 (20/60), corrected visual acuity log MAR was 0.23 ± 0.16 (20/30). Residual spherical refraction after surgery within ± 0.5 D; 0.75 D; ± 1.0D accounted for 34.6%, 61.5% and 80.7% respectively. Average postoperative astigmatism: 1.68 ± 1.20 D. Good result accounted for 53.8%, pass was 23.1% and fail was 23.1%. Conclusion: The visual acuity results of Phaco surgery on lasik eyes treated with refractive errors at 3 months were good and accounted for 76.9%. Maximum corrected visual acuity ≥ 20/50 was 69.2%, residual refraction within ±1.0D was 80.7%