The mean preoperative myopic spherical equivalent was - 10.8 D (range 1.50 - 22 D) and mean astigmatism - 1.80 D Cyl (range - 0.50 - 3.50 D Cyl) with a follow up 6 months.
Độ cận trung bình trước mổ -10.8 Diop (1.5 - 22 D). Độ loạn trung bình - 1.80 độ trụ (-0.5 - 3.5 DC).