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Table 3 Tomographic parameters of eyes by group

From: Comparisons of corneal biomechanical and tomographic parameters among thin normal cornea, forme fruste keratoconus, and mild keratoconus

Parameters

TNC

FFKC

MKC

Statistics

P

KmF (D)

43.9 ± 1.4

43.7 ± 1.5

44.3 (41.5–48.5)

3.916

0.141

Kmax (D)

45.1 ± 1.7

45.2 ± 1.9

49.0 (43.8–57.3)#&

45.110

< 0.001

Astig F (D)

1.1 (0.1–4.6)

1.1 (0.1–2.2)

1.5 (0.1–5.2)

2.806

0.246

ISV

18.68 ± 5.83

19.72 ± 5.66

41.00 (17.00–82.00)#&

92.504

< 0.001

IVA

0.11 (0.05–0.35)

0.16 (0.06–0.33)

0.40 (0.16–1.02)#&

90.624

< 0.001

KI

1.03 (0.95–1.07)

1.04 (1.00–1.10)

1.10 (1.00–1.23)#&

76.787

< 0.001

CKI

1.01 (1.00–1.02)

1.01 (1.00–1.04)

1.02 (0.97–1.13)#&

28.187

< 0.001

  1. TNC thin normal cornea; FFKC forme fruste keratoconus; MKC mild keratoconus; KmF mean keratometry from the anterior corneal surface; Kmax maximum keratometry from the anterior corneal surface; Astig F central astigmatism from the anterior corneal surface; ISV index of surface variance; IVA index of vertical asymmetry; KI keratoconus index, CKI central keratoconus index
  2. P is the value among the three groups. *, # and &represent statistically significant difference with TNC and FFKC, TNC and MKC, FFKC and MKC, respectively
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Eye and Vision

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