Table 2 Comparison of visual quality between before and after SIMLE surgery.

From: Posterior lenticule laser scan influence the ultra-early postoperative visual acuity and quality of SMILE

 

Preoperative

Postoperative

Delta

Range

P-value

MTF

40.06 [31.48;46.74]

28.25[20.40;39.19]

-7.03[-19.18; 0.01]

-44.74 ~ 31.14

< 0.001

SR

0.22 [0.18;0.27]

0.13[0.10;0.20]

-0.09 [-0.14;-0.01]

-0.29 ~ 1.42

< 0.001

OSI

0.60 [0.50;0.90]

1.90[1.20;2.75]

1.10 [0.60;1.90]

-0.60 ~ 6.7

< 0.001

VA100%

1.30 [1.07;1.52]

0.9 [0.7;1.3]

-0.20 [-0.60;0.00]

-1.50 ~ 1.10

< 0.001

VA20%

1.00[0.70;1.20]

0.60 [0.40;0.90]

-0.30 [-0.53;0.00]

-1.30 ~ 1.00

< 0.001

VA9%

0.60 [0.50;0.70]

0.3 [0.2;0.5]

-0.20[-0.40;0.00]

-0.80 ~ 12.40

< 0.001

  1. MTF: Modulation Transfer Function; SR: Strehl Ratio; OSI: Object Scatter Index; VA: Predicted Visual Acuity.