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Table 2 Circularity measurements during surgery and postoperative keratometric measurements performed in 14 volunteer patients

From: Keratometry device for surgical support

Patient

Nidek Oculus Hand-held corneal topographer

Post-operative Remaining

Astigmatism

(diopter)

Prototype

Post-operative Remaining Astigmatism

(diopter)

Prototype - Achieved

Circularity

(%)

Prototype

Axis (degrees)

Nidek Oculus Hand-held corneal topographer

Axis (degrees)

1

-0,75

-0,75

99

24

5

2

-0,50

-0,75

98

2

1

3

-3,00

-2,25

92

1

2

4

0,00

-1,50

95

0

3

6

-1,00

-1,25

94

104

110

7

-1,50

-1,75

95

180

171

8

-4,50

-4,75

85

32

30

9

-0,75

-0,50

99

57

33

10

-0,50

-0,50

99

16

4

11

-1,25

-1,00

99

15

8

12

-0,50

-0,75

97

102

73

13

-0,25

-0,75

98

148

134

14

-2,50

-2,75

90

162

156