There's a box somewhere on the initial application form where you enter any prescriptions for contact lenses/glasses if you wear them.
As I wear contacts, I entered my prescription and received an e-mail with "your application has been forwarded to our medical team" or something along those lines.
You must have normal colour vision and your visual acuity must be 6/9 or better in each eye. This visual acuity can be achieved using correction but there are limits on the amount of correction required.
Correction shall not exceed + 5 or - 6 dioptres equivalent spherical error in each eye. Cylindrical correction shall not exceed 2 dioptres in each eye. The difference between the amount of correction required for each eye shall not exceed 2 dioptres.
If you have had any form of eye surgery including squint correction or laser visual correction, then please be aware of the following:
Even if the pre-operative correction is within the acceptable range, applicants will be referred to a specialist appointed by the CAA for further examination.
However, if the pre-operative correction is outside of the CAA limits of + 5 or - 6 dioptres, then a Class 1 certificate will not be granted even if the post-operative correction is normal.
Took that from NATS website (
Eligability - NATS Air Traffic Controllers Careers), might be worth asking your optician if you meet the requirement.