Table 2 Preoperative and postoperative visual acuity and refractive outcomes in eyes undergoing combined corneal wavefront-guided transepithelial photorefractive keratectomy and accelerated corneal collagen cross-linking after intracorneal ring segment implantation in patients with moderate keratoconus

logMAR UDVA

0.85 ± 0.27

(0.30 to 1.30)

0.58 ± 0.27

(0.18 to 1.10)

<

.001

0.29 ± 0.29

(−0.20 to 1.20)

0.37 ± 0.30

(−0.10 to 0.80)

.999

0.17 ± 0.14

(−0.10 to 0.54)

.169

.038

<.001

<.001

logMAR CDVA

0.25 ± 0.18 (0.10 to 0.70)

0.19 ± 0.20

(0.00 to 0.70)

.898

0.13 ± 0.07

(0.00 to 0.30)

0.10 ± 0.07

(0.00 to 0.20)

.092

0.07 ± 0.06

(0.00 to 0.20)

.002

.109

<.001

.024

Sphere

−1.41 ± 2.30

(−7.50 to 2.75)

−0.14 ± 1.33

(−3.75 to 2.25)

.002

−0.14 ± 1.28

(−4.75 to 1.50)

−0.02 ± 0.99

(−2.75 to 1.25)

.999

0.08 ± 0.85

(−2.00 to 1.25)

.999

.999

.046

.999

Cylinder

−1.83 ± 1.37

(−5.00 to 0.00)

−2.06 ± 1.10

(−5.25 to

−0.50)

.999

−1.56 ± 1.21

(−5.00 to

−0.25)

−1.42 ± 1.25

(−5.00 to

−0.25)

.999

−1.07 ± 0.73

(−3.00 to

−0.25)

.023

.145

.059

.020

MRSE

−2.33 ± 2.22

(−8.00 to 1.25)

−1.17 ± 1.19

(−4.50 to 1.00)

.002

−0.92 ± 1.50

(−5.63 to 0.88)

−0.73 ± 1.26

(−4.50 to 0.75)

.999

−0.46 ± 0.99

(−3.50 to 0.75)

.131

.119

.005

.280