Amend KRS 311.840 to define terms; amend KRS 311.842, 311.848, 311.850, 202A.011, 202C.010, 216B.175, and 600.020 to change references to "supervising physician" to "collaborating physician" to conform; amend KRS 311.844 to include Schedule II controlled substances in the list of controlled substances authorized license holders may prescribe; amend KRS 311.858 to list the services a physician assistant may provide; require a physician assistant to consult and collaborate with or refer a patient to an appropriate licensed physician as indicated by the patient's condition and the standard of care; create a new section of KRS 311.840 to 311.862 to establish requirements for a collaboration agreement between a collaborating physician and a physician assistant; amend KRS 186.577 to allow physician assistants to administer driver vision tests; amend KRS 218A.202 to conform; repeal KRS 311.854, 311.856, and 311.860, relating to supervising physicians.