Presentation on theme: "JAR-FCL 3 SECTION 1 Appendix 14 to Subparts B and C Colour perception (See JAR–FCL 3.225 and 3.345) 1 The Ishihara test (24 plate version) is to be considered."— Presentation transcript:
JAR-FCL 3 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 5 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.