Age-Matched, Case-Controlled Comparison of Clinical Indicators for Development of Entropion and Ectropion
Table 2
Descriptive statistics for each clinical measurement.
Clinical measurement
Data type
Control
Entropion
Entropion control
Ectropion
Ectropion control
Statistical test
MRD2 (mm)
Mean
4.8
5.0
4.9
5.1
4.6
IS -test
Stand. dev.
0.6
1.4
1.0
1.5
1.2
Median
5.0
5.0
5.0
5.0
5.0
Range
3.0–6.0
2.5–7.0
2.0–7.0
2.0–8.0
2.0–5.5
Lid crease height (mm)
Mean
3.5
4.5
3.2
3.9
3.2
IS -test
Stand. dev.
0.5
1.2
0.6
2.0
0.6
Median
3.5
4.8
3.0
4.0
5.0
Range
2.5–4.0
2.0–6.0
2.0–4.5
2.0–9.0
2.0–7.0
Retractor dehiscence
Present
3
28
6
15
1
Fisher’s
Absent
49
2
16
15
6
White line
Present
0
17
1
11
0
Fisher’s
Absent
52
13
21
19
7
Orbital fat
Present
1
24
9
24
5
Fisher’s
Absent
51
6
13
6
2
Lid excursion (mm)
Mean
5.5
3.6
5.1
3.9
4.2
IS -test
Stand. dev.
1.0
1.6
0.9
1.0
0.9
Median
5.0
3.5
5.0
4.0
4.5
Range
4.0–8.0
0.0–6.0
3.0–6.0
2.0–6.0
3.0–5.0
Lateral canthal excursion (mm)
Mean
5.2
3.3
4.9
4.7
3.9
IS -test
Stand. dev.
0.6
1.3
0.7
0.7
1.5
Median
5.0
3.0
5.0
5.0
5.0
Range
4.0–6.0
0.0–5.0
3.0–6.0
2.0–7.0
1.0–5.0
Snapback test
Mean
2.0
2.4
2.1
2.8
2.9
M-W-
Stand. dev.
0.7
0.9
0.8
0.6
0.4
Median
2.0
3.0
2.0
3.0
3.0
Lid distraction (mm)
Mean
7.4
9.0
9.0
10.1
9.0
IS -test
Stand. dev.
1.6
2.3
2.3
1.6
1.3
Median
7.0
9.0
9.0
10
8
Range
5.0–10.0
5.0–16.0
5.0–16.0
7.0–16.0
8.0–11.0
IS -test: independent samples -test. Fisher’s: Fisher’s exact test. M-W-: Mann-Whitney test. Stand. dev.: standard deviation. (mm): millimeters.
Values are per eye, not per patient.
