| Source | 
        Subjects (eyes) | 
        CH (mmHg) | 
        CRF    (mmHg) | 
       
      
        | Mean    ± SD  | 
        Range  | 
        Mean    ± SD | 
        Range | 
       
      
        | Luce    [12] | 
        339 | 
        9.6 | 
          | 
          | 
          | 
       
      
        | Shah    et al. [13] | 
        207 | 
        10.7    ± 2.0 | 
        6.1    to 17.6 | 
        10.3    ± 2.0 | 
        5.7    to 17.1 | 
       
      
        | Hager    et al. [14] | 
        156 | 
        10.6    ± 2.3 | 
          | 
        10.9    ± 2.4 | 
          | 
       
      
        | Shah    et al. [15] | 
        207 | 
        10.7    ± 2.0 | 
        6.1    to 17.6 | 
          | 
          | 
       
      
        | Ortiz    et al. [16] | 
        164 | 
        10.8    ± 1.5 | 
          | 
        11.0    ± 1.6 | 
          | 
       
      
        | Kynigopoulos et al. [17] | 
        49 | 
        10.68 ± 1.8 | 
        6.9 to 16.3 | 
        11.26 ± 1.79 | 
        7.4 to 16.3 | 
       
      
        | Sullivan-Mee et al. [18] | 
        71 | 
        10.2 ± 1.3 | 
          | 
          | 
          | 
       
      
        | Hurmeric et al. [19] | 
        28 | 
        10.1 ± 1.3  | 
          | 
        10.1 ± 1.8 | 
          | 
       
      
        | Fontes et al. [20] | 
        86 | 
        10.13 ± 1.75 | 
        5.95 to 14.58 | 
        10.06 ± 1.97 | 
        5.45 to 15.10 | 
       
      
        | Detry-Morel et al. [21] | 
        24 | 
        10.8 ± 1.8  | 
        7.5 to 14.5 | 
        11 ± 2 | 
        8.1 to 15.7 | 
       
      
        | Plakitsi et al. [22] | 
        99 | 
        10.4 ± 1.2 | 
          | 
        10.1 ± 1.5 | 
          | 
       
      
        | Present study  | 
        480 | 
        10.38    ± 1.36  | 
        6.30    to 19.23  | 
        10.70    ± 1.59  | 
        5.57    to 19.47  | 
       
      |