![]() ![]() An ENG 3 should be issued.ĭeck seafarers who already hold an ENG 1 with a colour vision restriction MUST be issued with the new restriction, as normal colour vision is an international requirement, as laid down in STCW. This is in addition to ticking NO in the “Fit for lookout duties” box on the certificate, and Yes in the “Colour Vision: Defective” box. Not eligible for MCA Deck COC or Rating certification” “ Deck cadets with defective colour vision will be Category 4 (Permanently Unfit for sea service).Īll other deck department seafarers/ratings/yacht personnel with defective colour vision are to be given the restriction: “Not fit for lookout duties at night. On 22 November 2016, at the Approved Doctors Seminar in London, the MCA again revised the ENG Assessment deck restrictions (reproduced in italics below): The new MCA regulations are very significant in developing and maintaining a career at sea. The subjects' IT error scores provided plate-specific weights used to calculate a Severity Index (SI) of colour vision loss, measured and compared in three subject groups.Many people suffer from defective colour vision. The research investigated 742 subjects using a 25-plate IT test with a Colour Assessment and Diagnosis (CAD) of chromatic sensitivity, which quantifies the signals needed to see just red, green, yellow and blue colour differences. The research examines how well the number of failed IT plates captures a subject's loss of colour vision and whether a level of importance can be attached to each IT plate to improve the test's predicted severity of loss. Since these tests were developed to screen for normal colour vision, not the severity of colour vision loss, there are no objective pass/fail limits for deciding when an applicant can no longer be considered safe. ![]() The problem with conventional colour assessment tests such as the Ishihara Test (IT) is that they produce inconsistent results and do not quantify accurately an individual's severity of colour vision loss. ![]() International agents and representatives.School of Health & Psychological Sciences.Job prospects and graduate destinations.Placements, internships and employment opportunities.Lesbian, gay, bisexual, transgender and queer plus. ![]()
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