The 38g PolyTip^® Cannulas utilize an extremely thin-walled, semi-flexible tip which allows maximum flow rate in a small diameter cannula. They are rigid enough to penetrate the retina, eliminating the need to create a separate retinotomy. These products are ideal for subretinal injection. They can also be used for low volume fluid drainage, such as draining subretinal PFCL. The luer lock hub allows a quick secure connection to our MicroDose™ Injection Kit, syringe, extension tube or infusion line. The 2mm green tip allows easy passage through valved entry cannulas and better visibility. The shorter tip is rigid enough to penetrate the retina, while the 5mm is more flexible.