Okla. Admin. Code § 612:15-1-2
The following words and terms, when used in this Chapter, shall have the following meanings, unless the context clearly indicates otherwise:
"Competent Authority" means a certifying authority who, in cases of blindness, visual impairment, or physical limitations, is a doctor of medicine, doctor of osteopathy, ophthalmologist, optometrist, registered nurse, therapist, professional librarian, professional staff of a hospital, institution or public or private welfare agency, and Department of Rehabilitation staff (VR Counselors, Rehabilitation Teachers, and Superintendents); in the case of reading disability from organic dysfunction, competent authority is defined as a doctor of medicine or doctor of osteopathy who may consult with colleagues in associated disciplines.
"NLS" means the National Library Service of the Library of Congress.
"OLBPH" means the Oklahoma Library for the Blind and Physically Handicapped.
Okla. Admin. Code § 612:15-1-2