The following is probably standard for all UK recruits to the Fire Service (this is from the West Midlands).
I hope you understand it!
Corrected visual acuity should be 6/9 binocularly, and a minimum of 6/12 in the worse eye. The minimum uncorrected vision for recruits should be 6/18 in the better eye and 6/24 in the worse eye
An upper hypermetropic limit of +3.00. Ability to read N12 at 30cm unaided with both eyes open (applicants aged 25 and over)
Ability to read N6 at 30cm unaided with both eyes open (applicants under 25 years of age)
No history of night blindness or any ocular disease that is likely to progress and result in future failure of the visual standards for fire fighters.
Colour vision.
Isihara testing should be used and include all plates, not just the numbers. It must be performed under suitable lighting conditions ( Standard illuminant C).
For those that fail the Ishihara plates the Farnsworth D15 test is indicated. The Nagel anomaloscope (and City University computer based MCV test) may also be required as they are the only techniques that can distinguish between protanomalous and deuteranomalous individuals.
The optician will also be asked whether you have undergone any significant surgery to either eye, including implants or radical keratotomy. Please note that laser eye treatment is considered on an individual basis.
The report will be forwarded to our Occupational Health team for a decision as to your suitability for the role of a firefighter.