Reliability by Cronbach’s alpha
Cornea  
Goldmannapplanation 0.99
Tono-Pen 0.98
Pneumotonometer 0.98
Superotemporal  
Tono-Pen 0.93
Pneumotonometer 0.95
Superonasal  
Tono-Pen 0.94
Pneumotonometer 0.84
Inferotemporal  
Tono-Pen 0.90
Pneumotonometer 0.95
Inferonasal  
Tono-Pen 0.91
Pneumotonometer 0.86
Table 1: Intraobserver reiliability.