Research Article
Understanding the Correlation between Tomographic and Biomechanical Severity of Keratoconic Corneas
Table 1
Median ± 95% CI of the variables evaluated in normal corneas and diseases grades.
| | Normal | KC | | Grade 0 | Grade 1 | Grade 2 | Grade 3 | | Median | 95% CI | Median | 95% CI | Median | 95% CI | Median | 95% CI |
| 1 (D) | 42.7 | 42.4–43.2 | 44 | 43.3–44.5 | 47.7 | 47.2–49.0 | 54 | 52.2–58.0 | 2 (D) | 43.7 | 43.2–44.2 | 46.8 | 45.8–47.8 | 53.4 | 52.4–53.8 | 60.9 | 57.5–65.5 | max (D) | 44.2 | 43.6–44.6 | 50.6 | 48.9–52.5 | 59.2 | 58.4–60.6 | 69.6 | 65.4–75.2 | mean (D) | 43.3 | 42.7–43.6 | 45.8 | 44.5–46.1 | 50.4 | 50.0–51.3 | 56.9 | 54.9–61.3 | Location of cone (mm) | — | — | 0.28 | 0.12–1.53 | 0.25 | 0.16–1.48 | 0.25 | 0.12–1.15 | CCT (micron) | 526.5 | 521.0–536.9 | 488 | 466.6–505.0 | 454 | 446.7–464.7 | 421 | 391.4–440.3 | TPT (micron) | 522 | 517.0–528.9 | 475 | 459.3–494.7 | 443 | 435.5–448.1 | 403 | 376.0–432.6 | IOP (mmHg) | 16.3 | 15.5–17.0 | 14 | 13.5–14.7 | 13.5 | 12.0–14.0 | 12.5 | 11.2–13.0 | 1 (msec) | 7.48 | 7.41–7.55 | 7.15 | 7.08–7.26 | 7.06 | 6.88–7.15 | 6.92 | 6.74–7.03 | Time (msec) | 15.02 | 14.78–15.25 | 14.78 | 14.78–15.10 | 15.02 | 14.73–15.53 | 15.02 | 14.78–15.40 | 2 (msec) | 21.41 | 21.26–21.57 | 21.56 | 21.42–21.74 | 21.63 | 21.51–21.81 | 21.85 | 21.73–22.05 | DA (mm) | 1.10 | 1.06–1.13 | 1.22 | 1.15–1.26 | 1.23 | 1.21–1.30 | 1.39 | 1.34–1.47 | AUDA (mmHg·msec) | 13.01 | 12.09–13.84 | 18.5 | 15.72–19.41 | 18.42 | 16.70–20.99 | 23.84 | 21.13–28.64 |
an RMS (mm) | 0.095 | 0.091–0.099 | 0.111 | 0.107–0.118 | 0.113 | 0.109–0.124 | 0.132 | 0.125–0.142 |
bn RMS (mm) | 0.034 | 0.033–0.037 | 0.026 | 0.023–0.029 | 0.028 | 0.023–0.032 | 0.030 | 0.025–0.039 |
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