For regular contact lens wearers with a VDL limitation on their medical certificate, it is not necessary to measure (unaided) vision (right eye (R), left eye (L), both eyes (B)), visual acuities (VAs) with specs (R,L,B) and VAs with contact lenses (R,L,B) at every revalidation medical assessment.
A contact lens wearer should have their VAs checked with their contact lenses in-situ every other medical and have their (unaided) visions and VAs with spectacles checked at medicals in between, thus alternating between glasses and contact lenses at each medical.
There are a number of reasons for doing this. Firstly contact lens wearers will have more regular checks (usually 6 monthly) at their local optometrists compared to purely spectacle wearers (yearly or 2 yearly) so it is very unlikely that the lens prescription is incorrect. Secondly, if the (unaided) visual acuities are checked and the pilot is then asked to insert their lenses, checking the VAs immediately does not give a true representation of the performance of the lens once settled. This can take 5-10 minutes in some cases and VA will improve in that time. Thirdly, a contact lens wearer is more likely to have poorer unaided visual acuities, as they are more reliant on using correction and therefore have a greater visual benefit from wearing contact lenses. Finally, for both the pilot and examiner, this process will save time.
We are now recruiting an airspace specialist to help answer general enquiries about UK airspace. Experience from wi… https://t.co/8I4i0GwYc2
3 days ago
Airspace restrictions will be in place to protect RAF100 flypast https://t.co/pr2tCoWAzz 10 July. Find out more… https://t.co/KJ1kr3fghx
3 days ago
Visit us at @aeroexpo and pick up our latest Listening Squawk card - it lists all airport codes & frequencies. Keep… https://t.co/2GrfAER0Ug
10 days ago
Read all @UK_CAA
CAA launches investigation into airspace infringement
22 June, 2018
Airspace restrictions announced for Royal Air Force 100 flypast
21 June, 2018
CAA increases operational scope of GA Permit aircraft
12 June, 2018
Read all News
Sharing the cost of recreational flying
4 May, 2018
Planning your next holiday abroad?
10 April, 2018
‘Share the Air’ gets off to a flying start
1 December, 2017
Read All Blogs