Subretinal PolyTip® Cannulas

Infographic explaining why our 38g subretinal cannula can be cross-referenced with a 41g subretinal cannula in other brands.

Subretinal PolyTip® Cannulas utilize an extremely thin-walled, semi-flexible tip which allows maximum flow rate in a small diameter cannula. The luer lock hub allows a quick, secure connection to a syringe, extension tube, or infusion line.

We also carry a line of Extendable PolyTip® Cannulas which are designed for easy entry through a valved trocar system.



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31g Tip

The 31g tip of our 3218 is excellent for fluid aspiration or endodrainage of a macular hole.

3218 PolyTip® Cannula 25g/31g
25g x 28mm cannula with 31g x 5mm tip

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Subretinal PolyTip® Cannulas

Our 38g microtip is ideal for subretinal injection. The tip is rigid enough to penetrate the retina without prior retinotomy.

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PolyTip® Length Comparison

3236 PolyTip® Cannula 20g/38g
20g x 28mm cannula with 38g (0.12mm) x 5mm tip

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3233 PolyTip® Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) x 5mm tip

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3254 PolyTip® Cannula 23g/38g (2mm) new.png
23g x 28mm cannula with 38g (0.12mm) x 2mm green tip

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3219 PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) x 5mm tip

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3255 PolyTip® Cannula 25g/38g (2mm) new.png
25g x 28mm cannula with 38g (0.12mm) x 2mm green tip

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3259 PolyTip® Cannula 27g/38g
27g x 28mm cannula with 38g (0.12mm) x 5mm tip

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3256 PolyTip® Cannula 27g/38g (2mm) new.png
27g x 28mm cannula with 38g (0.12mm) x 2mm green tip

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Extendable PolyTip® Cannulas

Extendable PolyTip® cannulas use a 38g microtip, ideal for subretinal injection. The tip is rigid enough to penetrade the retina without prior retinotomy. The 38g tip can be extended up to 5mm in length. Shorter tubing reduces loss of injection fluid. Priming volume is approximately 0.1mL.


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3249 Extendable PolyTip® Cannula 20g/38g
20g x 28mm cannula with 38g (0.12mm) tip

3248 Extendable PolyTip® Cannula 23g/38g
23g x 28mm cannula with 38g (0.12mm) tip

3247 Extendable PolyTip® Cannula 25g/38g
25g x 28mm cannula with 38g (0.12mm) tip