Research Article
Diagnostic Accuracy of Corneal and Epithelial Thickness Map Parameters to Detect Keratoconus and Suspect Keratoconus
Table 2
OCT-based corneal thickness data in normal, suspect keratoconus, and keratoconus groups.
| Pachymetry (μm) | Normal | SKC | KC | ANOVA | values | Mean | SD | Range | Mean | SD | Range | Mean | SD | Range | SKC vs. normal | KC vs. normal | KC vs. SKC |
| Min CT (0_2) | 524.97 | 60.81 | 294 | 645 | 491.49 | 30.92 | 422 | 546 | 444.94 | 54.91 | 287 | 527 | <0.0001 | 0.004 | <0.0001 | <0.0001 | Avg CT (0_2) | 538.02 | 44.62 | 456 | 655 | 502.21 | 31.21 | 436 | 560 | 469.41 | 52.76 | 307 | 559 | <0.0001 | <0.0001 | <0.0001 | 0.004 | Max CT (0_2) | 552.89 | 42.34 | 480 | 671 | 516.91 | 32.23 | 452 | 579 | 499.94 | 48.96 | 344 | 592 | <0.0001 | <0.0001 | <0.0001 | 0.227 | Min-Max (0_2) | −27.92 | 44.61 | −256 | −8 | −25.42 | 10.72 | −58 | −9 | −55.94 | 20.94 | −106 | −26 | 0.0001 | 0.0015 | <0.0001 | 0.0001 | Min CT (2_5) | 524.49 | 63.19 | 282 | 644 | 491.58 | 30.8 | 422 | 546 | 447.62 | 49.38 | 312 | 527 | <0.0001 | 0.005 | <0.0001 | 0.001 | Avg CT (2_5) | 556.66 | 43.25 | 483 | 671 | 523.56 | 32.28 | 460 | 581 | 510.65 | 37.27 | 401 | 586 | <0.0001 | <0.0001 | <0.0001 | 0.444 | Max CT (2_5) | 598.46 | 45.73 | 515 | 718 | 564.51 | 36.12 | 503 | 655 | 564.74 | 32.72 | 505 | 623 | <0.0001 | <0.0001 | <0.0001 | 1 | S-I CT (2_5) | 6.80 | 40.07 | −214 | 59 | 18.7 | 15.12 | −5 | 76 | 28.75 | 24.05 | −38 | 90 | 0.0041 | 0.157 | 0.004 | 0.482 | SN-IT CT (2_5) | 19.51 | 36.12 | −179 | 63 | 33.49 | 15.11 | −2 | 80 | 46.25 | 24.72 | −30 | 109 | 0.0001 | 0.043 | <0.0001 | 0.168 | Min-Max CT (2_5) | −73.97 | 52.32 | −345 | −39 | −72.93 | 20 | −133 | −42 | −117.12 | 44.84 | −220 | 7 | 0.0001 | 0.0503 | 0.0001 | 0.0001 | CCT | 537.13 | 43.66 | 449 | 652 | 498.93 | 31.42 | 433 | 558 | 462.03 | 55.99 | 287 | 554 | <0.0001 | <0.0001 | <0.0001 | 0.001 |
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Min = minimum; CT = corneal thickness; Avg = average; Max = maximum; Min-Max = minimum-maximum; S-I = superior-inferior; SN-IT = superonasal-inferotemporal; CCT = central corneal thickness; SKC = suspect keratoconus; KC = keratoconus; SD = standard deviation. Statistically significant values . Values in bold are statistically significant. |