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Table 5 Post-operative correlations to parameters following PRK

From: Goldmann and modified Goldmann tonometry measuring intraocular pressure changes in eyes which underwent myopic laser in situ Keratomileusis and photorefractive keratectomy

Post-Operative Cor. PRK

Pearson Corr. Coef. r=

Probability p=

CCT (IOPc-IOPg)

(−)0.13

0.3

Age (IOPc-IOPg)

0.06

0.65

Ablation Depth/IOPg Reduct

(−)0.03

0.78

Ablation Depth/IOPc Reduct

(−)0.01

0.93

CCT Change/IOPg Reduct

(−)0.08

0.56

CCT Change/IOPc Reduct

(−)0.07

0.44

Bland-Altman (IOPc-IOPg)

(−)0.08

0.54

  1. IOPc and IOPg Measurement Agreement and Multi-variate analysis.
  2. Bland-Altman IOP measurement agreement analysis demonstrated a significant bias between the two measurements in the study population for both the pre- and post-LASIK and post-PRK groups (Fig. 3-A,B,C). There was no significant differential IOP correlation to the average IOP (Tables 2, 4 and 5)