Clinical Characteristics and Prognostic Factors of Posterior Segment Intraocular Foreign Body: Canadian Experience from a Tertiary University Hospital in Quebec
Table 3
Baseline characteristics of 54 patients with intraocular foreign body by final visual acuity.
Characteristics
Final visual outcome
value
Good >50 letters ETDRS
Poor ≤50 letters ETDRS
Mean ± SD or n (%)
Male sex
28 (93%)
22 (92%)
0.82
Age
38.5 ± 12.5
43.5 ± 12.1
0.15
Baseline VA
57.9 ± 30.9
12.5 ± 24.3
<0.001
Delay
20.0 ± 66.7
9.8 ± 39.3
0.47
IOFB
Metallic nature
28 (93%)
19 (83%)
0.22
Size
2.8 ± 1.7
7.5 ± 5.2
<0.001
Localization
Vitreous
13 (43%)
6 (25%)
0.16
Retina
17 (57%)
14 (58%)
0.90
Entry site
Cornea
17 (57%)
13 (57%)
0.99
Corneoscleral
3 (10%)
5 (22%)
0.24
Sclera
10 (33%)
5 (22%)
0.35
Number of additional diagnoses
1.7 ± 1.0
3.5 ± 1.4
<0.001
Vitreous hemorrhage
10 (33%)
18 (75%)
0.002
Cataract
20 (67%)
19 (79%)
0.31
Retinal detachment
6 (20%)
10 (42%)
0.08
Retinal tear
3 (10%)
5 (21%)
0.27
Hyphema
3 (10%)
14 (58%)
<0.001
Iris damage
1 (3%)
5 (21%)
0.042
Choroid detachment
1 (3%)
2 (8%)
0.43
Endophthalmitis
0 (0%)
1 (4%)
0.26
Interventions
Anterior chamber extraction
0 (0%)
5 (21%)
0.009
Pars plana extraction
30 (100%)
24 (100%)
1.00
Scleral buckle
8 (27%)
11 (46%)
0.14
Graft
2 (7%)
3 (13%)
0.46
First intention IOL
8 (27%)
3 (13%)
0.026
Reoperation
4 (13%)
10 (42%)
0.018
Tamponade
Air
17 (57%)
6 (25%)
0.019
SF6
11 (37%)
4 (17%)
0.10
C3F8
0 (0%)
7 (29%)
0.002
Silicone
2 (7%)
7 (29%)
0.027
Postoperative VA
79.6 ± 7.0
13.1 ± 14.9
<0.001
Bolded figures = statistically significant results at the 0.05 level. Abbreviations: ETDRS, Early Treatment Diabetic Retinopathy Study; IOFB, intraocular foreign body; SD, standard deviation; VA, visual acuity.
