The ATC code S01 is a subgroup within the Anatomical Therapeutic Chemical (ATC) Classification System, which is maintained by the World Health Organization (WHO) for the classification of medicines. The ATC system divides drugs into groups according to the organ or system on which they act and their therapeutic, pharmacological, and chemical properties.
Classification
- Anatomical main group: S – Sensory organs
- Therapeutic subgroup: S01 – Ophthalmologicals
Scope
ATC code S01 encompasses all pharmaceutical preparations intended for use in the treatment of diseases and disorders of the eye. This includes a wide range of formulations such as drops, ointments, gels, and solutions that are administered topically to the ocular surface or intraocularly.
Subdivisions
The S01 category is further divided into more specific pharmacological and chemical subgroups, each identified by an additional letter and numbers. Major subdivisions include:
- S01AA – Antibacterials (e.g., ciprofloxacin eye drops)
- S01AB – Antiseptics and disinfectants (e.g., povidone‑iodine)
- S01BA – Antiallergic agents (e.g., olopatadine)
- S01CA – Mydriatics and cycloplegics (e.g., tropicamide)
- S01DA – Anti‑inflammatory agents, non‑steroidal (e.g., ketorolac)
- S01EA – Anti‑inflammatory agents, corticosteroids (e.g., dexamethasone)
- S01FA – Antiglaucoma preparations, prostaglandin analogues (e.g., latanoprost)
- S01GA – Antiglaucoma preparations, β‑blocking agents (e.g., timolol)
- S01HA – Antiglaucoma preparations, carbonic anhydrase inhibitors (e.g., dorzolamide)
- S01JA – Antiglaucoma preparations, sympathomimetics (e.g., brimonidine)
- S01KA – Anti‑infectives, other (e.g., antiviral agents such as acyclovir)
- S01LA – Diagnostic agents (e.g., fluorescein)
- S01XA – Various ophthalmologicals, other (e.g., lubricants, artificial tears)
Usage
Medicines classified under ATC code S01 are prescribed for conditions including bacterial conjunctivitis, allergic conjunctivitis, dry eye syndrome, glaucoma, uveitis, postoperative inflammation, and for diagnostic staining of the cornea, among others. The classification assists healthcare professionals, researchers, and regulatory agencies in drug utilization studies, pharmacovigilance, and the organization of pharmaceutical information.
Regulatory and Statistical Relevance
The ATC code S01 is employed in national and international drug databases, prescription monitoring systems, and epidemiological research to aggregate data on ophthalmological drug consumption and trends. It enables standardized reporting across different health systems and facilitates comparative analyses of drug use patterns.