Did you know that many of us will have defective colour vision? In the general population, some 8% of males and 0.4% females will have hereditary colour deficiencies, which could result in them seeing huge colour variations from what is generally considered to be normal.
Colour vision can also deteriorate during your lifetime and is affected by age and health, this is why Colour Vision Testing can be important to your business.
Even those individuals with perfect colour vision can have poor colour discrimination meaning difficulty in picking up small differences between colours that others may see more easily.
If employees in your organisation are routinely making colour decisions based on what they can see, it may be wise to have their colour vision tested periodically. Colour Vision may be deficient from birth with a hereditary cause but can also change during someone’s lifetime as it is susceptible to being affected by the age and health of the person as well as substances they ingest such as caffeine and alcohol or medication. Here at VeriVide, alongside our colour training courses, we offer individual colour vision testing, which is always performed sensitively and discreetly. Invest in your most important asset – your people.
There are two simple non-invasive tests that we use: The Ishihara test and The Farnsworth-Munsell 100 Hue Test.
The Ishihara Test
Assessment for colour deficiency (commonly known as colour blindness), a condition characterised by the reduced ability to distinguish different colours of the spectrum.
The test consists of 24 plates with randomised dots forming numbers and patterns that are more or less visible depending on the degree of any colour vision defect present. The test can provide a very accurate diagnosis of some defects, particularly Protanopia and Deuteranopia which cause the most commonly found colour deficiencies otherwise known as red/green colour blindness.
The Farnsworth-Munsell 100 Hue Test
Used widely in the industry for over 60 years, the Munsell 100 Hue test is a colour discrimination test. It was designed to assess colour acuity, the ability to identify small changes in colour which confirms the aptitude of an individual to perform colour matching and colour assessment. Often used to select applicants for colour inspection jobs it can also be used to monitor colour vision when performed annually or biannually. Those with normal colour vision are graded with superior, average or low colour discrimination. The test also detects colour vision abnormalities, including diagnosis of deficiency in blue discrimination which is not possible with the Ishihara test.
The test consists of four trays containing a total of 85 movable-coloured tiles. The user arranges the tiles in each tray in order of hue. Depending on how much misplacing occurs, colour vision aptitude can be assessed with some accuracy.
All our tests are performed under artificial daylight in a VeriVide Colour Assessment Cabinet. But fear not! If you do not own one of these already and want to perform the tests on your own premises, we have a portable assessment cabinet that we can bring along.
Test results are analysed by our colour experts at VeriVide and certificates are issued for each individual showing their total score and classification.
You choose! Wherever is most convenient for you. Tests can take place at your own premises, an agreed location or at our UK HQ in Leicester.
Ensure colour accuracy in your workforce by taking a simple test at your convenience. Contact us today if you would like to know more.
Contact: Georgina Boulter at firstname.lastname@example.org or +44 (0)116 284 7790