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Journal of Ophthalmology
/
2012
/
Article
/
Tab 1
/
Research Article
Safety and Efficacy of Epithelium-On Corneal Collagen Cross-Linking Using a Multifactorial Approach to Achieve Proper Stromal Riboflavin Saturation
Table 1
Visual acuity, refraction, and corneal thickness changes during 1-year followup.
Parameter
Preoperative (
𝑛
=
6
1
)
Postoperative
1 Month (
𝑛
=
5
9
)
3 Months (
𝑛
=
2
9
)
6 Months (
𝑛
=
3
3
)
12 Months (
𝑛
=
6
1
)
VA (Snellen)
UDVA
(
2
0
/
1
3
3
±
2
0
/
5
7
)
(
2
0
/
9
5
±
2
0
/
4
9
)
(
𝑃
=
0
.
0
0
)
(
2
0
/
8
7
±
2
0
/
4
4
)
(
𝑃
=
0
.
0
0
)
(
2
0
/
8
0
±
2
0
/
4
8
)
(
𝑃
=
0
.
0
0
)
(
2
0
/
6
7
±
2
0
/
4
2
)
(
𝑃
=
0
.
0
0
)
CDVA
(
2
0
/
3
2
±
2
0
/
3
3
)
(
2
0
/
2
9
±
2
0
/
3
0
)
(
𝑃
=
0
.
0
1
)
(
2
0
/
2
8
±
2
0
/
3
1
)
(
𝑃
=
0
.
0
0
)
(
2
0
/
2
6
±
2
0
/
3
0
)
(
𝑃
=
0
.
0
0
)
(
2
0
/
2
4
±
2
0
/
2
8
)
(
𝑃
=
0
.
0
0
)
Refraction (D)
Sphere
0
.
0
5
±
3
.
0
3
0
.
6
4
±
3
.
1
4
(
𝑃
=
0
.
1
2
)
0
.
4
4
±
2
.
8
2
(
𝑃
=
0
.
5
5
)
0
.
5
0
±
2
.
9
2
(
𝑃
=
0
.
1
0
)
0
.
2
1
±
2
.
4
3
(
𝑃
=
0
.
6
1
)
SE
−
1
.
9
7
±
3
.
1
9
−
0
.
9
8
±
3
.
0
9
(
𝑃
=
0
.
0
0
)
−
1
.
3
8
±
2
.
5
8
(
𝑃
=
0
.
0
3
)
−
1
.
3
3
±
3
.
1
1
(
𝑃
=
0
.
0
1
)
−
1
.
2
3
±
2
.
4
6
(
𝑃
=
0
.
0
5
)
Cylinder
−
4
.
0
3
±
2
.
5
3
−
3
.
2
7
±
2
.
2
1
(
𝑃
=
0
.
0
0
)
−
3
.
6
5
±
2
.
6
2
(
𝑃
=
0
.
0
1
)
−
3
.
6
6
±
2
.
4
1
(
𝑃
=
0
.
0
0
)
−
2
.
8
8
±
2
.
0
0
(
𝑃
=
0
.
0
0
)
CCT (
μ
m)
4
5
1
±
4
5
4
2
5
±
5
8
(
𝑃
=
0
.
0
0
;
𝑛
=
2
1
)
4
3
6
±
4
5
(
𝑃
=
0
.
0
0
;
𝑛
=
3
1
)
4
4
1
±
5
8
(
𝑃
=
0
.
8
1
;
𝑛
=
2
6
)
4
6
0
±
4
7
(
𝑃
=
0
.
1
5
;
𝑛
=
5
0
)
UDVA: uncorrected distance visual acuity; CDVA: corrected distance visual acuity; SE: spherical equivalent; CCT: central corneal thickness.
