ATC code S01

ATC codes
S Sensory organs
S01 Ophthalmologicals
S02 Otologicals
S03 Ophthalmological and otological preparations

ATC code S01 Ophthalmologicals is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the WHO for the classification of drugs and other medical products. Subgroup S01 is part of the anatomical group S Sensory organs.

Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QS01. ATCvet codes without corresponding human ATC codes are cited with the leading Q in the following list.

National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version.

...
Wikipedia