They are the chain stitch, the buttonhole stitch and couching. When couching threads contrast with laid threads, patterns may be worked in the couching stitches. Couching is also characteristic of Japanese metal-thread embroidery and Central Asian suzani work. Couching is a largely unsuccessful technique with abysmal outcomes. Couching does not compare favourably to modern cataract surgery. Other songs were more subtle, couching racist messages behind social critiques and political action calls. Couching is the earliest documented form of cataract surgery. There are many Couching class for taekwondo and Karate. His description of cataract surgery was compatible with the method of couching. Other professions of her include couching, economist, masseuse, and personal trainer. Evidence shows that couching was widely practiced in China, Europe and Africa.