Comparison between the symptomatic patients with silicone floaters identified during the outbreak period and the 34 non-symptomatic patients where intravitreal silicone was found in the examined eye among 50 non-symptomatic consecutive patients investigated (Non-symptomatic)
| Variable | Symptomatic, n=46 | Non-symptomatic, n=34 | P value | ||
| Mean (SD) | Range | Mean (SD) | Range | ||
| Age | 72.7 (13.0) | 30–95 | 81.2 (8.8) | 59–98 | 0.000 |
| Visual acuity during outbreak | 0.19 (0.20) | −0.18 to 0.74 | 0.24 (0.24) | −0.10 to 0.84 | 0.622 |
| Intravitreal injections during outbreak | 5.1 (1.8) | 2–8 | 4.5 (2.0) | 2–8 | 0.197 |
| Intravitreal injections (total) | 20.6 (16.7) | 2–66 | 34.3 (29.8) | 3–117 | 0.033 |
| Percentage | Percentage | P value | |||
| Male sex | 37.0 | 20.6 | 0.142 | ||
| Diabetic macular oedema | 15.2 | 5.9 | 0.288 | ||
| Retinal vein occlusion | 23.9 | 17.6 | 0.587 | ||
| Neovascular AMD | 58.7 | 73.5 | 0.236 | ||