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Table 2 The correlations between lens fitting decentration and the change of Zernike coefficients in (PCCP – PCCB) and (PCCP − OCCP)

From: Influence of overnight orthokeratology lens fitting decentration on corneal topography reshaping

\( {C}_n^m \)

PCCP − PCCB

PCCP − OCCP

Radial

Horizontal

Vertical

Radial

Horizontal

Vertical

\( {C}_3^{-1} \)

/

/

0.693*

−0.296†

/

0.904*

\( {C}_3^1 \)

−0.379*

0.730*

/

−0.396*

0.901*

/

\( {C}_4^0 \)

0.531*

/

/

0.449*

/

/

\( {C}_4^2 \)

/

−0.301†

0.275†

/

/

/

\( {C}_5^1 \)

/

0.369*

/

/

0.340*

/

  1. Abbreviations: PCCP = Pupil-centered corneal Zernike coefficients of post-treatment; PCCB = Pupil-centered corneal Zernike coefficients of baseline/pre-treatment; OCCP = OK-lens-centered corneal Zernike coefficients of post-treatment
  2. *P < 0.001 (Pearson correlation (r) test), significant statistical significance
  3. †P < 0.05 (Pearson correlation (r) test), statistical significance