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Table 2 Comparison between keratometry, pachymetry and higher-order aberrations in patients with progressive keratoconus

From: Rate of fractional change in corneal tomography parameters in keratoconus using a combination of predictive parameters

Comparison of pachymetric parameters#

 

ACT

CCT

CV7

CV10

TCT

P = 0.7, S = 0

P = 0.4, S = 0.1

P = 1.4 × 10−4, S = 0.4

P = 1.7 × 10−5, S = 0.5

ACT

 

P = 0.5, S = 0.1

P = 7.5 × 10−4, S = 0.4

P = 2.3 × 10−5, S = 0.5

CCT

 

P = 2.6 × 10−3, S = 0.3

P = 1.6 × 10−5, S = 0.4

CV10

 

P = 0.3, S = 0.1

Comparison of best performing keratometric, pachymetric and corneal higher order aberrations parameters#

 

CA-HOA

Coma

TCT

ACT

CCT

Ks

P = 7.3 × 10−6, S = 0.5

P = 7.4 × 10−10, S = 0.7

P = 0.1, S = 0.2

P = 0.3, S = 0.1

P = 0.6, S = 0.1

Kmax

P = 1.4 × 10−4, S = 0.4

P = 1.9 × 10−8, S = 0.6

P = 0.5, S = 0.1

P = 0.4, S = 0.1

P = 0.08, S = 0.2

CA-HOA

  

P = 7.3 × 10−5, S = 0.4

P = 2.4 × 10−4, S = 0.4

P = 2.9 × 10−5, S = 0.5

Coma

  

P = 1.4 × 10−8, S = 0.6

P = 3.4 × 10−8, S = 0.6

P = 1.7 × 10−9, S = 0.7

  1. Kmax = maximum keratometry (anterior); Ks = steep central keratometry (anterior); ACT = apical corneal thickness; CCT = central corneal thickness; TCT = thinnest central cornea; CV7 = corneal volume at 7 mm; CV10 = corneal volume at 10 mm; CA-HOA = corneal anterior surface higher-order aberrations at 8 mm; Coma = coma, anterior surface at 8 mm
  2. #P value and strength of effect (S), Mann–Whitney test. Significant P values < 0.05 and S ≥ 0.3 are in bold
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Eye and Vision

ISSN: 2326-0254