Prescription and Pharmaceutical Authority: Legend Drugs and Controlled Substances
Prescription authority is a scope question first and a pharmacology question second. The exam tests whether the drug, indication, and documentation are within Oregon optometric authority.
Legend drugs and controlled substances
Oregon optometrists may use and prescribe pharmaceutical agents as authorized by statute and Board rule, within the optometric formulary and for ocular or related conditions. Authority is not unlimited: a drug outside the formulary, a non-ocular indication, or a quantity inconsistent with ocular treatment can fall outside scope. Controlled substances add federal DEA registration, Oregon registration and prescription-monitoring rules, and schedule-specific limits. A DEA number does not expand state scope; both must authorize the prescription. Prescribe only after an appropriate history and examination, screen for allergies, interactions, pregnancy or lactation, and contraindications, and document the indication, dose, duration, and monitoring.
Prescription hygiene
Use a valid prescription format: patient, date, drug, strength, directions, quantity, refills, prescriber, and signature or electronic authorization. Avoid prescribing for self, family, or friends outside a real clinician-patient relationship. Do not use pre-signed blanks. When a controlled substance is involved, check the PDMP as required and document the check.
Worked example
An OD wants to prescribe a controlled oral analgesic for a patient's eye pain. The OD has a DEA number. The analysis: Is the drug within optometric prescribing authority and the Board formulary? Is the indication ocular? Does state controlled-substance law permit it? Is PDMP review required? If any answer is no, the prescription is outside scope even though the DEA registration is active.
Traps
Equating DEA registration with state scope. Prescribing for a friend's headache because 'it started in the eye.' Skipping documentation of indication and monitoring. Ignoring the formulary because a drug is familiar.