Hand-eye coordination is vital for enabling the eyes to guide the hands to accurate movements. Most daily activities require some degree of hand-eye coordination — cutting with scissors, threading, sewing, writing, directing a key into a lock, etc. Fine motor skills require the use of the small muscles which control the movement of the hand, fingers, thumb and wrist as well as the formation of the open web space between the thumb and index finger. The development of these muscles is required for skills such as buttoning and zipping, tying shoelaces, feeding yourself, etc.