Safety recommendation
NTSB Recommends FAA Action on Visual Correction for Air Traffic Controllers
The NTSB recommends the FAA require visual correction methods that eliminate the need for changing corrective lenses during air traffic control duties.
The NTSB recommends that the Federal Aviation Administration require that any visual correction for an air traffic controller be accomplished in a manner that eliminates the need to change, add, or remove various corrective lenses while performing air traffic control duties.
Original regulatory source: https://data.ntsb.gov/carol-main-public/sr-details/A-89-087