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Br J Ophthalmol 86:627-631 doi:10.1136/bjo.86.6.627
  • Scientific correspondence

Influence of post-LASIK corneal healing on scanning laser polarimetric measurement of the retinal nerve fibre layer thickness

Table 3

RNFLT values at baseline, and their changes during the healing process of the cornea after LASIK. The definitions of the thickness parameters are shown in Table 2

Baseline (1) Day 1 (2) Day 3 (3) Month 3 (4)
SLP parameter (μm) Mean (SD) 95% CI Mean (SD) 95% CI Mean (SD) 95% CI Mean (SD) 95% CI p Value
p* = ANOVA for repeated measurements;
p† = Duncan test
Superior average thickness 79.6 (16.5) 71.9 to 87.4 71.6 (11.2) 66.2 to 77.0 72.6 (12.1) 66.9 to 78.3 74.4 (12.3) 68.6 to 80.2 p†1–2=0.0005
p†1–3=0.001
p†1–4=0.002
p†2–3=0.220
p†2–4=0.025
p†3–4=0.246
Inferior average thickness 80.7 (17.8) 72.4 to 89.0 77.6 (11.0) 72.3 to 82.9 77.1 (12.3) 71.4 to 82.9 81.1 (13.6) 74.7 to 87.4 p†1–2=0.083
p†1–3=0.076
p†1–4=0.698
p†2–3=0.956
p†2–4=0.042
p†3–4=0.041
Temporal average thickness 53.7 (22.7) 43.0 to 64.3 52.7 (19.5) 43.3 to 62.1 52.1 (20.4) 42.5 to 61.6 56.5 (22.0) 46.2 to 66.8 p*=0.119
Nasal average thickness 57.6 (13.1) 51.5 to 63.7 55.7 (9.5) 51.1 to 60.3 54.8 (10.5) 49.9 to 59.8 57.6 (13.2) 51.4 to 63.8 p*=0.134
Ellipse average thickness 72.1 (14.0) 65.6 to 78.7 68.2 (9.0) 63.8 to 72.5 67.8 (10.3) 63.0 to 72.7 71.0 (11.3) 65.7 to 76.3 p†1–2=0.002
p†1–3=0.004
p†1–4=0.463
p†2–3=0.816
p†2–4=0.014
p†3–4=0.019
Average thickness 66.2 (12.8) 60.2 to 72.2 62.9 (8.9) 58.6 to 67.2 62.8 (9.7) 58.2 to 67.4 63.9 (10.3) 59.1 to 68.7 p†1–2=0.002
p†1–3=0.004
p†1–4=0.046
p†2–3=0.698
p†2–4=0.174
p†3–4=0.289

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