| Description | Lachrymal cannula, straight. | Bailey lachrymal cannula, 7 mm exposed tip, 8 mm reinforced. | Lachrymal cannula, straight, reinforced 20 mm. | Mcintyre straight lachrymal cannula, closed end, two side ports at 0.3 mm, straight shaft. | West lachrymal cannula, blunt tip with inner side opening, gently curved shaft. |