Overview of Medical Requirements

If you qualify and successfully complete training to become an operational ATCO, you will be required to undergo medical examinations every two years when you are aged under 40 and every year after age 40 throughout your career

Hearing	No hearing loss greater than 20 dB (HL) in either ear at frequencies of 500, 1,000, and 2,000 Hz. No hearing loss greater than 35 dB (HL) at 3,000 Hz.
Vision	Normal colour vision is required. Visual acuity must be 6/9 or better in each eye, and 6/6 with both eyes together. Contact lenses may be used, but correction must not exceed +5 or -6 dioptres equivalent spherical error in each eye. If you have undergone eye surgery, including laser correction, you are technically disqualified. However, if extensive ophthalmological testing confirms fitness—and your pre-surgery vision was within the +5 to -6 dioptre range—you may be deemed fit by the Authorised Medical Supervisor.
Cardiovascular System	You must have normal blood pressure and no cardiovascular disease.
Neurological System	You must not have: Epilepsy (unless seizure-free and medication-free for 10 years). Any progressive disease of the nervous system. Any risk of cerebral dysfunction.
Respiratory System	You must have no significant respiratory disease.
Urinary System & Gastro-Intestinal Tract	You must have no significant disease of the urinary system and/or gastro-intestinal tract.
Alcohol & Drugs	Alcohol consumption is strictly controlled. Recreational drug use is strictly forbidden for both students and operational Air Traffic Control Officers. You will be subject to random drug and alcohol testing throughout your career.