A comparison of NCT, Goldman application tonometry values with and without fluorescein

Figures & data

Table 1 Minimum and maximum IOP value and mean ± SD for NCT, nGAT, fGAT

	Min–max	Mean ± SD	P-valuea	P-valueb
NCT	10.0–30.0	17.5±3.7
nGAT	7.0–18.0	12.5±2.7	0.000
fGAT	7.0–19.0	12.3±2.7	0.000	0.269

Notes:

a P difference NCT and nGAT, fGAT value;

b P difference nGAT and fGAT value.

Abbreviations: fGAT, GAT with fluorescein; GAT, Goldmann applanation tono­meter; IOP, intraocular pressure; NCT, noncontact tonometer; nGAT, GAT without fluorescein.

Table 2 Minimum–maximum value, mean value ± SD of CCT, refractive value, keratometric value

	Minimum– maximum	Mean ± SD
CCT (µm)	425–617	538.20±34.40
Keratometric value (keratometry of the corneal dioptre [D])	38.00–48.50	45.30±1.50
Refractive value (spherical equivalent dioptre [D])	0.00–6.80	0.90±1.20

Abbreviation: CCT, central corneal thickness.

Figure 1 Correlation analysis of IOP (mmHg) between NCT and fGAT.

Abbreviations: fGAT, GAT with fluorescein; GAT, Goldmann, applanation tonometer; IOP, intraocular pressure; NCT, noncontact tonometer.

Figure 2 Correlation analysis of IOP (mmHg) between NCT and nGAT.

Abbreviations: GAT, Goldmann applanation tonometer; IOP, intraocular pressure; NCT, noncontact tonometer; nGAT, GAT without fluorescein.

Figure 3 Bland–Altman plot of IOP (mmHg) between NCT and fGAT.

Abbreviations: fGAT, GAT with fluorescein; GAT, Goldmann, applanation tono­meter; IOP, intraocular pressure; NCT, noncontact tonometer.

Figure 4 Bland–Altman plot of IOP (mmHg) between NCT and nGAT.

Abbreviations: GAT, Goldmann applanation tonometer; IOP, intraocular pressure; NCT, noncontact tonometer; nGAT, GAT without fluorescein.