1. The lantern-tests may be retaken after 6 months.
JAR-FCL SECTION 1
Appendix 14 to Subparts B and C
Colour perception
(See JAR–FCL and 3.345)
1 The Ishihara test (24 plate version) is to
be considered passed if the first 15 plates
are identified without error, without uncertainty
or hesitation (less than 3 seconds per plate).
These plates shall be presented randomly.
For lighting conditions see the JAA Manual of
Civil Aviation Medicine.
2 Those failing the Ishihara test shall be
examined either by:
(a) Anomaloscopy (Nagel or equivalent). This test
is considered passed if the colour match
Is trichromatic and the matching range is 4 scale
units or less, or by
(b) Lantern testing. This test is considered passed
if the applicant passes without error a test with
lanterns acceptable to the AMS such as
Holmes Wright, Beynes, or Spectrolux.
[Amdt. 3, ]
Amendment Appendices
OPHTHALMOLOGY (Manual of Civil Aviation Medicine)
[c) Beyne´s protocol
Ambient lighting: Darkness
Adaptation period: Three minutes
Visual correction: Normal distance - (non-tinted)
Subject-lantern distance: Five metres (subject is seated); lantern is at eye level
Lantern setting: Three minutes of arc
Exposure time for each light: One second
Permitted response time: Three seconds (from the termination of light exposure)
Pre-test instructions:
This test is to find out if you can distinguish red, green, white, blue and orange lights.
The lights will be shown to you one at a time. You will see red, green, white,
orange and blue and no other colours. You will be shown each light for one
second and will have three seconds to respond. If you take longer than
three seconds, this will be regarded as a mistake. Any questions? Start now’
The lights are not demonstrated prior to the test.
Order of presentation of the lights:
First and last presentation is blue. Between the two blue presentations
three white, three green, three red and one orange light are shown, in a
random order i.e. 12 lights are presented.
Number of runs: One (two if one mistake is made in the first run)
Pass criteria: No mistakes - the subject is passed as ‘colour vision safe’.
Two or more mistakes - the subject is failed as ‘colour vision unsafe’.
Only one mistake - a second run of 12 lights is permitted. If no mistakes are
made on the second run, the subject is passed as ‘colour vision safe’.
The lantern-tests may be retaken after 6 months.

2. Beyne Lantern Test
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28. Beyne Lantern Test
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