Table 1 Descriptive characteristics on healthy subjects(n = 189).

From: Agreement and repeatability of a novel portable transpalpebral tonometer for home tonometry versus non-contact and rebound tonometry

 

Mean ± SD

Minimum

Maximum

Age (years)

55.22 ± 5.81

51

88

IOP IC01

18.69 ± 6.35

7.02

23.62

IOP TOPCON CT-800

18.85 ± 2.25

7.65

22.98

IOP Icare200

18.82 ± 2.92

7.23

23.01

AST (μm)

739.58 ± 53.62

628

885

AL (mm)

23.44 ± 0.77

20.68

26.34

ACD (mm)

3.28 ± 0.48

2.04

4.99

SE (D)

43.85 ± 1.22

38.59

48.88

TSE (D)

44.18 ± 1.42

38.22

49.47

Corneal parameters

2.21 ± 0.15

1.15

2.88

Length 1 (mm)

   

Velocity 1 (ms)

0.18 ± 0.14

0.08

2.11

Length 2 (mm)

1.95 ± 0.35

0.08

2.65

Velocity 2 (ms)

&-0.32 ± 0.25

&-0.33

&-0.11

Peak distance (mm)

4.98 ± 0.18

4.05

5.84

Radius (mm)

6.15 ± 0.48

4.05

8.95

Deform amplitude (mm)

2.18 ± 2.68

0.78

2.86

CCT (μm)

548.99 ± 39.48

459

689

  1. IOP: intraocular pressure;AST: anterior scleral thickness; AL: axial length; ACD: anterior chamber depth; SE: spherical equivalent; TSE: total spherical equivalent; CCT: central corneal thickness; Corneal parameters.
  2. All the parameters included were: corrected by biomechanics IOP (IOP), central corneal thickness (CCT), length 1–2 and velocity 1–2 (length of the flattened cornea and velocity of the movement of the cornea at the first or second applanation), radius (central concave curvature at highest concavity), peak distance (PD, distance between the two surrounding peaks of the cornea at the highest concavity), and deformation amplitude (DA, maximum amplitude at the apex of highest concavity).
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