Table 1.

 Patient data

	Mean	SD	Range
Age (years)	64.6	13.2	23–87
Sex (% male)	50
Eye side (% right)	52
CCT (μm)	546.5	39.8	436–664
GAT observer 1 IOP (mm Hg)	17.2	4.3	09–32
GAT observer 2 IOP (mm Hg)	17.6	4.9	09–35
Tono-Pen IOP (mm Hg)	16.6	4.4	07–29
OBF IOP (mm Hg)	17.1	5.9	08–34
NCT IOP (mm Hg)	16.4	5.0	07–29

CCT, central corneal thickness; GAT, Goldmann applanation tonometer; OBF, ocular blood flow; NCT, non-contact tonometer.