Fig. 2

Mean extracted volume in 5 min using different techniques for a variety of clinically used silicone oils. Figure 2 depicts the volume aspirated in 5 min for all tested extraction techniques. Shortening the cannula from 6 mm to 1.5 mm increased the aspirated volume in a near-linear fashion. Extraction sleeves and the luer-trocar system showed significantly greater volumes aspirated in 5 min when compared to polyimide cannulas and even aspirated a comparable volume at 27G. No significant difference in removal speed was apparent between the extraction sleeve and the luer-trocar system