Eye of the hand is
The median nerve controls coarse movements of the hand, as it supplies most of the long muscles of the front of the forearm. It is, therefore, called the labourer&;s nerve. It is also called "eye of the hand" as it is sensory to most of the hand.Reference: Vishram Singh Anatomy; 2nd edition; Page no: 177
Median Nerve
Ulnar Nerve
Radial Nerve
Posterior Interosseous Nerve
Upper limb