SYBB010 Membranous cataract shears 12cm straight, blade length 12 It has precise cutting ability and good manoeuvrability. It is usually made of stainless steel or titanium alloy with excellent corrosion resistance and durability. The design of the Membrane Cataract Scissors allows the surgeon to easily manipulate, accurately cut and remove the membranous cataract while minimising damage to the eye.