Colour vision is an integral part of our daily lives, enabling us to distinguish between different hues and shades and appreciate the beauty of the world around us. However, only some see colour similarly; some may need help to distinguish between certain colours. This is where a colour vision test can be helpful. This article will explore what a colour vision test is, how it works, and why it matters.

What is a Colour Vision Test?

A colour vision test is a screening tool to assess a person’s ability to distinguish between colours. These tests are designed to identify colour vision deficiencies, which various factors, including genetics, ageing, and certain medical conditions, can cause. Colour vision tests are conducted in eye clinics and typically involve looking at images or patterns and identifying the colours within them.

How Does a Colour Vision Test Work?

There are several different types of colour vision tests, each assessing colour vision slightly differently. Some of the most common types of colour vision tests include:

  • Ishihara Test: This is the most commonly used test and involves looking at a series of plates with coloured dots and identifying the numbers or shapes within them.
  • Farnsworth-Munsell 100 Hue Test: This test involves arranging a series of coloured tiles in order of hue, from light to dark.
  • Colour Arrangement Test: This test involves arranging a series of coloured chips in order of hue, from light to dark, from red to green, and from blue to yellow.
  • Lantern Test: This test assesses colour vision in low-light conditions and identifies different coloured lights.

Why is a Colour Vision Test Important?

There are several reasons why a colour vision test may be necessary. Some of the most common reasons include the following:

  • Employment: Certain jobs require good colour vision, such as graphic arts, painting, and electrical work. A colour vision test may be required as part of a pre-employment screening process.
  • Medical Conditions: Some conditions, such as diabetes and multiple sclerosis, can cause colour vision deficiencies. The test can help to identify these deficiencies and prompt further medical evaluation.
  • Safety: Good colour vision is essential for safety, particularly when colour-coded warnings or signals are used. For example, a person with colour vision deficiencies may be unable to distinguish between green and red traffic lights, which could be dangerous.
  • Quality of Life: Good colour vision is vital for enjoying and appreciating the beauty of the world around us. People with colour vision deficiencies may have difficulty distinguishing between colours, impacting their quality of life.

Are There Prescription Glasses to Correct Colour Vision?

When it comes to vision correction, prescription glasses are often the go-to solution. But what about colour vision correction? Is it possible to use cheap prescription glasses to help improve colour vision?

The answer is yes. However, there are a few things to consider before investing in prescription glasses for colour vision correction.

First, it’s important to understand that colour vision is a complex process that involves more than just the eyes. It’s also influenced by how the brain functions and interprets colours. Therefore, correcting colour vision requires more than just glasses.

Moreover, the types of glasses used for colour vision correction are different from regular eyeglasses. The lenses in these glasses are designed to filter certain colours of light, which can help your brain distinguish between colours more easily.

Finally, it’s essential to understand that while colour vision glasses can help improve colour vision, they cannot completely restore normal colour vision. However, they can help make colours more distinguishable and improve perception in certain situations. Lastly, you can also find a contact lens to aid in colour vision if you prefer not to wear glasses. 


If you have colour vision deficiencies or need to take a colour vision test for employment or other purposes, consult a qualified eye care professional. They can help assess your colour vision and guide any necessary treatment or accommodations.

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