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  • Refer to the Driver and Vehicle Licensing Agency (DVLA) in England, Scotland and Wales or Driver & Vehicle Agency in Northern Ireland information on visual standards for driving.
  • The DVLA and DVA will decide whether a person is medically unfit to drive.
  • The patient must inform the DVLA or DVA if they have a condition which might affect safe driving.
  • If you consider a patient does not meet the vision standards for driving, you should advise them not to drive.
  • If the patient continues to drive, and you cannot persuade them to stop, you should contact the DVLA or DVA and inform the patient. You may wish to discuss this with your professional or representative body first.
  • You should provide guidance on tints.
  • There is currently no legal eyesight requirement for a patient who drives a mobility scooter or powered wheelchair, although the DVLA does have recommendations for standards of vision.
A265
This guidance does not change what you must do under the law. 
A266
Group 1 drivers must be able to read a number plate in good daylight at a distance of 20m and have binocular acuity of 6/12. They must also meet certain visual field requirements. There are additional requirements for Group 2 drivers.
A267
You should refer to the Driver & Vehicle Licensing Agency (DVLA) in England, Scotland and Wales or the Driver & Vehicle Agency (DVA) (Northern Ireland for information on visual standards required for driving various classes of vehicle..96, 97, 98
A268
When advising drivers on the most suitable form of lens for their needs, you should consider the transmission of any tinted lens and whether it is suitable for night driving. An anti-reflection coating will improve the transmission of the lens.
A269
The DVLA and the DVA have legal responsibility for deciding if a person is medically unfit to drive.
A270
The patient is legally responsible for informing the DVLA or DVA, if they do not meet the vision standard for driving. Information on how they can do this is in the Useful information section below. However, if you think the patient may pose a very real risk of danger to the public, but you are not sure whether you should act, ask yourself: 
  1. what might the outcome be in the short or longer term if I do not raise my concern? 
  2. how could I justify not raising the concern?
A271
If you decide that the patient is unfit to drive, you should:
  1. tell the patient that they are unfit to drive and give the reasons. You may wish to discuss your concerns with a relative or carer, if the patient consents to this
  2. tell the patient that they have a legal duty to inform the DVLA or DVA about their condition and that you may be obliged to tell the DVLA or DVA if the patient continues to drive when they are unfit to do so
  3. put your advice in writing to the patient
  4. record your advice and keep a copy of any correspondence to the patient on the patient record.
A272
If the patient does not accept that they are unfit to drive, you may suggest that they seek a second opinion. You should advise the patient not to drive in the meantime.
A273
Sometimes, the actions in para A271 might not achieve their aim, or would take too long to do so. You have a duty of confidentiality to the patient, but this is not absolute and can be broken if it is in the public interest to do so. Guidance from the Department of Health includes the example of reporting a driver who rejects medical advice not to drive as one where the public interest can be a defence to breaching patient confidentiality.99
A274
If you conclude that the public interest outweighs the duty of confidentiality, you should tell the patient you intend to notify the DVLA or DVA. If the patient objects to your decision, you should listen to, and record their reasons for doing so.
A275
If you decide to notify the DVLA or DVA you should:
  1. notify the appropriate authority (DVLA or DVA) in writing, and, if appropriate, provide evidence of clinical findings (see useful information below)
  2. notify the patient
  3. make a note on the patient record
  4. consider whether to notify other healthcare professionals, such as the patient’s GP.
A276
If you are considering informing the DVLA or DVA that the patient may not be fit to drive, you may wish to contact your professional or representative body for advice.
See section on Confidentiality.
A277
BS EN ISO 12312-1:2013100  attributes filters for sunglare use into five groups, according to their range of luminous transmittance (Tv): 
 
Filter category Description Range of luminous transmittance in the visible spectral range
0 clear or very light tint from over 80% to 100%
1 light tint from over 43% to 80%
2 medium tint from over 18% to 43%
3 dark tint from over 8% to 18%
4 very dark tint from over 3% to 8%
A278
Filters suitable for road use and driving shall be of categories 0, 1, 2 or 3 and in addition:
  1. the spectral transmittance of filters suitable for road use shall be not less than 0.2 x Tv for wavelengths between 475 and 650 nm, and
  2. the relative visual attenuation coefficient Q of filters of categories 0, 1, 2 and 3 suitable for driving and road use shall be not less than 0.8 for red and yellow signal lights, not less than 0.6 for yellow, green and blue signal lights.
A279
Sunglass filters with a luminous transmittance of less than 75% are not suitable for road use in twilight or at night. 
A280
There is currently no legal eyesight requirement for a patient who drives a mobility scooter or powered wheelchair. The DVLA recommends that the person should be able to read a car’s registration numberplate from a distance of 12.3 metres (40 feet) and must monitor their ability to do this regularly.101