| 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. | 55°, bevel up, designed for optimal tunnel architecture. | Ideal for short scleral tunnel and trabecular meshwork incisions |