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Table 5 Overview of optical coherence tomography (OCT) biomarkers over the course of the study. Statistical significance was calculated using the Chi-squared test

From: Optical coherence tomography biomarkers in patients with macular edema secondary to retinal vein occlusion treated with dexamethasone implant

 

Overall (n = 57)

Baseline

Month 2

Month 4

Month 6

p

DRIL, n (%)

 No

23 (40.4)

25 (43.9)

25 (48.1)

27 (47.4)

0.8365

 Yes

34 (59.6)

32 (56.1)

27 (51.9)

30 (52.6)

HRF, n (%)

 < 10

16 (28.1)

32 (56.1)

25 (48.1)

24 (42.1)

0.0851

 10–20

23 (40.4)

13 (22.8)

12 (23.1)

15 (26.3)

 > 20

18 (31.6)

12 (21.1)

15 (28.8)

18 (31.6)

Cyst, n (%)

 No Cysts

0 (0.0)

31 (54.4)

10 (19.2)

20 (35.1)

< 0.0001

 < 100 μm3

2 (3.6)

0 (0.0)

0 (0.0)

0 (0.0)

 100–200 μm3

12 (21.4)

7 (12.3)

4 (7.7)

4 (7.0)

 > 200 μm3

42 (75.0)

19 (33.3)

38 (73.1)

33 (57.9)

ELM status, n (%)

 Non-disrupted

13 (22.8)

10 (17.9)

8 (15.4)

15 (26.8)

0.8122

 Partially disrupted

24 (42.1)

28 (50.0)

25 (48.1)

24 (42.9)

 Disrupted

20 (35.1)

18 (32.1)

19 (36.5)

17 (30.4)

 

CRVO (n = 15)

Baseline

Month 2

Month 4

Month 6

p

DRIL, n (%)

 No

5 (33.3)

2 (13.3)

4 (30.8)

4 (26.7)

0.6078

 Yes

10 (66.7)

13 (86.7)

9 (69.2)

11 (73.3)

HRF, n (%)

 < 10

3 (20.0)

9 (60.0)

5 (38.5)

9 (60.0)

0.0028

 10–20

11 (73.3)

4 (26.7)

2 (15.4)

2 (13.3)

 > 20

1 (6.7)

2 (13.3)

6 (46.29

4826.7)

Cyst, n (%)

 No Cysts

0 (0.0)

9 (60.0)

2 (15.4)

5 (33.3)

0.0016

 < 100 μm3

1 (6.7)

0 (0.0)

0 (0.0)

0 (0.0)

 100–200 μm3

5 (33.3)

0 (0.0)

0 (0.0)

1 (6.7)

 > 200 μm3

9 (60.0)

6840.0)

11 (84.6)

9 (60.0)

ELM status, n (%)

 Non-disrupted

2 (13.3)

3 (21.4)

2 (15.4)

3 (20.0)

0.9950

 Partially disrupted

6 (40.0)

5 (35.7)

6 (46.2)

6 (40.0)

 Disrupted

7 (46.7)

6 (42.9)

5 (38.5)

6 (40.0)

 

BRVO (n = 42)

Baseline

Month 2

Month 4

Month 6

p

DRIL, n (%)

 No

18 (42.9)

23 (54.8)

21 (53.8)

23 (54.8)

0.6370

 Yes

24 (57.1)

19 (45.2)

18 (46.2)

19 (45.2)

HRF, n (%)

 < 10

13 (31.0)

23 (54.8)

20 (51.3)

15 (35.7)

0.2755

 10–20

12 (28.6)

9 (21.4)

10 (25.6)

13,831.0)

 > 20

17 (40.5)

10 (23.8)

9 (23.1)

14 (33.3)

Cyst, n (%)

 No Cysts

0 (0.0)

22 (52.4)

8 (20.5)

15 (35.7)

< 0.0001

 < 100 μm3

1 (2.4)

0 (0.0)

0 (0.0)

0 (0.0)

 100–200 μm3

7 (17.1)

7 (16.7)

4 (10.3)

3 (7.1)

 > 200 μm3

33 (80.5)

13 (31.0)

27 (69.2)

24 (57.1)

ELM status, n (%)

 Non-disrupted

11 (26.2)

7 (16.7)

6 (15.4)

12 (29.3)

0.6724

 Partially disrupted

18 (42.9)

23 (54.8)

19 (48.7)

18 (43.9)

 Disrupted

13 (31.0)

12 (28.6)

14 (35.9)

11 (26.8)

  1. RVO retinal vein occlusion, DRIL Disorganization od inner retinal layers, HRF Hyperreflective foci, CRVO Central retinal vein occlusion, BRVO Branch retinal vein occlusion