Table 2 RNFL thickness in the study populations

 With normal cognitive^a

56.42 ± 3.73

64.6 ± 3.35

107.7 ± 5.52

96.7 ± 5.97

77.25 ± 4.53

 With cognitive impairment^a

56.20 ± 2.19

61.11 ± 2.27

95.5 ± 3.35

83.39 ± 4.27

73.64 ± 1.81

Controls^a

57.65 ± 8.50

63.08 ± 10.57

111.2 ± 15.81

108.74 ± 14.40

84.1 ± 6.98

 P

0.62

0.38

<0.001

<0.001**

< 0.001**

 P®

0.02*

0.72

0.003*

<0.0001**

<0.0001**