Week 5- Visual standards for drivers Flashcards
Define License B or group 1:-
• Motorcycles, cars and light vans up to 8 passengers
3 questions for type B:-
• Can read car plate from 20.5m(67ft) or 20m where narrower characters are displayed ?( 50mm wide)
- characters 79.4mm high, 57mm wide from 20.5m in practice car plate?
- Charles wright font
The number plate test, what is it + facts:-
• Test done using charles wright font,
- 50mm wide and 79.5mm high, 20m distance
• Same snellen acuity as 6/9-2, therefore 6/9 or better would meet target
• Takes place time of driving test
- Carried out by driving examiner
• All UK drivers required to notify DVLA if unable to comply with standards
Question 2:-
• “Do you need to wear glasses/corrective lenses when driving”?
- Illegal to drive without necessary Rx
Question 3:-
• Have you ever had, or do you currently suffer from any of the following conditions:
- Any conditions affecting BOTH eyes, or the remaining eye if you only have one eye?
- Any condition affecting your visual field (Number 21 in Driving Standards list)?
Binocular visual field requirements:-
• Field of at least 120° on horizontal
• No significant defect in BV encroaching within 20° of fixation above or below horizontal
• Ester-man BV field test
- Grid if 120 test points to examine more than 130deg of visual field
Diplopia, colour vision, night blindness and monocularly associated with standards?
• Insuperable diplopia causes unfitness to drive
• Lack of colour vision is not a bar to driving
• Night blindness : acuity and field standards must be met, cases considered individual bases
• Monocularity is not bar to driving as long as:- driving standards met, adaptation condition is met
What are progressive conditions that can affect driving standards:-
• glaucoma
• high myopia
• cataract
• diabetic retinopathy
• macular degeneration
All require notification, with a license able to be issued as long as other requirements met - 1,2,3 year license available
Optometrists duty:-
• Inform px if driving age and falls below standards test
- Should be noted on record card
- warned about jeopardising of insurance if failure to comply
• If clear that they will not inform DVLA : Optom may seek advice from AOP, and send legal letter to px
Groups that need Licenses (PVD) for professional and vocational driving:-
• Large goods vehicles
• Medium sized vehicles (3.5-7.5 tonnes)
• Private hire cabs
• Passenger carrying vehicles
• People employed as drivers
• Mini-buss with 9-16 passenger seats
• Any vehicle with heavy trailers (750kg+)
Bars for PVD licenses:-
• Any pathological defect
- Drivers must have full visual fields
• Any insuperable diplopia or monocular vision
- Patching not acceptable
PVD license visual requirements:-
• Visual acuity of 6/9 in better eye, at least 6/12 in worse eye
• Uncorrected VA must reach at least 3/60 on snellen
• Must have normal field of vision in both eyes
• Must not be suffering from diplopia
• All applicants must carry spare set of glasses on them, and tolerate any visual correction well
Exceptions to new PVD standards:-
• Already held vocational license on 31st dec 1996, and do not meet new uncorrected standards are EXEMPT if:-
- Meet previous (1/1/97) uk standard
- Corrected acuity of 6/9 better eye, 6/12 worse eye and 3/60 (no rx) in at least one eye
- “Grandfather rights”
- Some drivers can be monocular
Further recommendations for exempt PVD drivers:-
• Must still meet eyesight regulations
- Driven an LGV or PCV 10 occasions in last 10 years
- Have not been involved in any accident in preceding 10 years where eyesight is factor
• Estimated 3000 drivers may loose their rights due to claiming “grandfather rights”
Group 2 license time frame:-
• Valid till age 45 or for 5 years
• 45+, there is 5 year cap, from 65+ renewals are annual
• Taxi drivers are licensed by local authorities