| Description | Smaller and tapered tip for creating a tunnel. | Circular knives have a 260° cutting edge for even incisions reducing post-op astigmatism. Also useful for trabeculotomy, DCR procedures, and vitreoretinal scleral dissection. Matte finish reduces glare from microscope light. | Crescent knives have a rounded tip for even incisions reducing post-op astigmatism. Also useful for trabeculotomy, DCR rocedues, and vitreoretinal scleral dissection. Matte finish reduces glare from microscope light, made from flat stock. | Ideal for short scleral tunnel and trabecular meshwork incisions. | Rounded tip for even incisions reducing post-op astigmatism. |
| Dimension | 2.5mm, straight | 2.25 mm, Straight | 1.75mm angled 60°, bevel up | 3.0mm, straight, double bevel | 2.5mm angled 55°, bevel up |