Variable

Control group (n = 30)

Patients group (n = 30)

Chi-square test

No.

%

No.

%

X²

P-value

Dry eye

No

30

100.0%

28

93.3%

2.069

0.150

Yes

0

0.0%

2

6.7%

Eye lid abnormalities

Negative

30

100.0%

27

90.0%

3.158

0.076

Positive

0

0.0%

3

10.0%

Conjunctiva abnormalities

Negative

28

93.3%

19

63.3%

7.954

0.005

Positive

2

6.7%

11

36.7%

ž Conjunctiva calcification

Negative

30

100%

26

86.7%

4.286

0.038

Positive

0

0.0%

4

13.3%

ž Conjunctiva vacuoles

Negative

30

100.0%

28

93.3%

2.069

0.150

Positive

0

0.0%

2

6.7%

ž Conjunctiva pigmentation

Negative

30

100.0%

26

86.7%

4.286

0.038

Positive

0

0.0%

4

13.3%

ž Follicular conjunctivitis

Negative

Positive

28

2

93.3%

6.7%

29

1

96.7%

3.3%

0.351

0.554

Corneal abnormalities

ž Corneal calcification

Negative

positive

30

0

100.0%

0.0%

25

5

83.3%

16.7%

5.455

0.020

ž Corneal vasculature

Negative

Positive

30

0

100.0%

100.0%

29

1

96.7%

3.3%

5.455

0.020

Fundus changes

Normal

30

100.0%

26

86.7%

4.286

0.038

Abnormal

0

0.0%

4

13.3%

ž Intra-retinal Hge

Negative

30

100.0%

27

90%

3.158

0.076

Positive

0

0.0%

3

10%

ž Myopic fundus

Negative

Positive

30

0

100.0%

0.0%

29

1

96.7%

3.3%

2.069

0.150