Sec. 1.2. As used in this chapter, "licensed practical nurse" means a person who holds a valid license issued under this chapter or IC 25-42 and who functions at the direction of:
(1) a registered nurse;
(2) a physician with an unlimited license to practice medicine or osteopathic medicine;
(3) a licensed dentist;
(4) a licensed chiropractor;
(5) a licensed optometrist; or
(6) a licensed podiatrist;
in the performance of activities commonly performed by practical nurses and requiring special knowledge or skill.