Comparative characteristics of Diaton-tonometry results while changing the tonometer position on the eyelid
by Alla R. Illarionova Academic Group of A.P.Nesterov, academician of Russian Academy of Medical Sciences (Moscow)
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Name, age
IOP Goldman
Diaton-tonometry
Correct Position (Variant 1)
Measuring through the Limb (Variant 2)
Measuring through the Cornea (Variant 3)
1
PEM, 47
30
16
27 15
21 13
18 10
2
VLY, 52
29
10
27 14
14 6
11 6
3
KNK
15
12
6
6
4
SIK, 58
8
14
12 16
8 15
6 10
5
IAK, 46
13
14
15 14
11 10
8,0 8,0
6
BPP
18
17
16 16
12 14
9,0 7,0
7
ChPN, 67
14
13
15 15
13 13
8,0 6,0
8
DYG, 48
12
14
11,0 12,0
9,0 9,0
7,0 9,0
9
FPO, 61
40
20
24 22
23 18
19 13
10
UAP, 77
11
17
14 17
10 13
8,0 10
11
FEI, 58
36
13
27 14
22 10
18 9,0
12
OOO
40
18
27 19
25 16
19 8,0
13
TYB, 67
16
15
14 14
10 10
6,0 7,0
Analysis of Measurement Results
Var1
Var2
Var3
Var4
MEAN
18,52
17,16
13,24
9,84
MEDIAN
15
15
13
8
SD
9,06053714
5,24944442
5,13387443
4,2296572
VALID_N
25
25
25
25
MIN case 1-61
8
11
6
6
MAX case 1-61
40
27
25
19
R
0,87
0,61
0,52
While analyzing the results of IOP measuring using one and the same device by one and the same investigator, the tonometer position on the eyelid being changed, the mean values closeness was registered only when the position of tip on the eyeball was correct.
The sufficient correlation of the results was observed only in this case.
While moving the tip lower in the limb area or on the cornea the result is significantly lower and is not true.
