Colour Blindness

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How We Treat Your Colourblindness

Cowichan Eyecare is dedicated to giving our patients truly exceptional care. This means going above and beyond when it comes to the products, services, and treatments we provide.

Although we cannot currently cure colour blindness, we can help you to discover the world in colour with EnChroma.

See the World in Colour

EnChroma lenses use incredible technology to filter certain wavelengths of light, resulting in enhanced colour vision for the wearer. This technology has been adjusted to make a wide range of lenses available to suit a variety of different colour vision deficiencies.

You can test yourself to see if you have a form of colour blindness by checking out the Colour Blindness Test on Enchroma’s website. This test will help you determine if you have any form of colour vision deficiency.
If you believe you have a form of colour blindness, please book an eye exam with us so we can help you find the right pair of Enchroma eye glasses to best serve your vision.

Give yourself – or someone you love – the gift of colour. Contact your local Cowichan Eyecare office to learn more today.

What is Colour Vision Deficiency?

What is Colour Vision Deficiency?

Colour vision deficiency (CVD) – often referred to as colourblindness – affects millions of people worldwide. With 1 in 10 men affected by this visual deficiency, it’s an incredibly common condition.

Our eyes use cells called cones to perceive light. An eye with regular colour vision has 3 types of cones, which are each used to detect different types of colour. When someone is colour deficient in their vision, it means that some or all of their cones are not functioning properly.

These cones are generally classified by the types of wavelengths they detect:

  1. S-cones are short-wavelength sensitive and perceive light on the “blue” spectrum.
  2. M-cones are middle-wavelength sensitive and perceive light on the “green” spectrum.
  3. L-cones are long-wavelength sensitive and perceive light on the “red” spectrum.

Monochromacy

To be technical, actual colour blindness – the total inability to identify any type of colour – is called monochromacy, or sometimes, achromatopsia. It occurs when This type of colour vision deficiency is extremely rare in comparison to the following types.

Dichromacy

CVD of this variety occurs when individuals only have 2 types of functioning cones. Because 1 cone type does not function, the eyes cannot see any colours in a particular area of the light spectrum. As a result, any colours within the affected spectrum are more difficult to distinguish than others.

Anomalous Trichromacy

This type of CVD is characterized by all types of cones functioning, but one improperly. This is the most common type of colour vision deficiency and results in reduced sensitivity to one type of light, which causes some colours to be less distinguishable from others.

Varieties of CVD

Red-Green

  • Deuteranomaly makes green look like red.
  • Protanomaly makes red look like green as well as more dull.
  • Protanopia and deuteranopia both make red and green indistinguishable.

Blue-Yellow

  • Tritanomaly causes blue and green, as well as yellow and red, difficult to distinguish.
  • Tritanopia creates and inability to tell the differences between blue and green, purple and red, and yellow and pink. 

What Causes CVD?

There are a few different culprits when it comes to colour vision deficiency.

  1. Genetics. CVD is most often passed from mother to son, although many more men than women are affected.
  2. Accidents. Strokes, injuries, and other emergency health crises can cause CVD due to damage to parts of the brain and the eyes.
  3. Other conditions. Certain diseases, such as Alzheimer’s, leukemia, and glaucoma, can lead to CVD.
  4. Medications. In some cases, the cause of CVD can be linked to antibiotics, barbiturates, and other classes of medications.
  5. Age. Some individuals may lose their ability to perceive colour along with other visual components as they age.
  6. Trauma and environmental impacts. After a severe head injury or following exposure to chemicals such as carbon monoxide, colour vision may become deficient.

The Challenges of Living With Colour Vision Deficiency

Harder Than It Seems: Living With CVD

More often than not, colourblindness may be brushed off as inconsequential or simply inconvenient. But the reality for those affected by CVD is much more serious.

A lot of worldly systems – cultural, societal, financial – are colour-coded. Green is often used as a positive signal and red as a negative. Consider the red “F” on a poorly completed school assignment, or perhaps the changing traffic lights at an intersection.

Without the ability to see colours, people affected by CVD have a very different experience from those who have regular colour vision.

Our Services

Visit Our Locations

Duncan and Area

Visit our main location in Duncan, enclosed by the Trans-Canada Highway, Beverly Street, and Canada Avenue. We are right next to Thrifty Foods.

Contact Us

Phone: 250.748.3937
Fax: 250.597.3456

Our Address

Unit 2 – 2755 Beverly Street
Duncan, BC V9L 6X2

Our Hours

Mondays
8:30 AM5 PM
Tuesdays
8:30 AM8 PM
Wednesdays
8:30 AM5 PM
Thursdays
8:30 AM8 PM
Fridays
8:30 AM5 PM
Saturday
8:30 AM4 PM
Sunday
Closed

Visit our main location in Duncan, enclosed by the Trans-Canada Highway, Beverly Street, and Canada Avenue. We are right next to Thrifty Foods.

Contact Us

Phone: 250.748.3937
Fax: 250.597.3456

Our Address

Unit 2 – 2755 Beverly Street
Duncan, BC V9L 6X2

Our Hours

Mondays
8:30 AM5 PM
Tuesdays
8:30 AM8 PM
Wednesdays
8:30 AM5 PM
Thursdays
8:30 AM8 PM
Fridays
8:30 AM5 PM
Saturday
8:30 AM4 PM
Sunday
Closed

Chemainus and Area

We look forward to serving you at our Chemainus location next to Grapefully Yours Winemakers. Find us just off of Maple Lane and Croft Street.

Contact Us

Phone: 250.246.3405
Fax: 250.246.3408

Our Address

Unit 106 – 9844 Croft Street
Chemainus, BC V0R 1K0

Our Hours

Monday
8:30 AM7 PM
Tuesday
8:30 AM7 PM
Wednesday
8:30 AM5 PM
Thursday
8:30 AM5 PM
Friday
8:30 AM5 PM
Weekend
Closed

We look forward to serving you at our Chemainus location next to Grapefully Yours Winemakers. Find us just off of Maple Lane and Croft Street.

Contact Us

Phone: 250.246.3405
Fax: 250.246.3408

Our Address

Unit 106 – 9844 Croft Street
Chemainus, BC V0R 1K0

Our Hours

Monday
8:30 AM7 PM
Tuesday
8:30 AM7 PM
Wednesday
8:30 AM5 PM
Thursday
8:30 AM5 PM
Friday
8:30 AM5 PM
Weekend
Closed

Cobble Hill and Area

We can’t wait to meet you at our Cobble Hill location. We are located off of Cowichan Bay Road, located close to Drumroasters Coffee.

Contact Us

Phone: 250.743.8899
Fax: 250.743.8898

Our Address

Unit 56 – 1400 Cowichan Bay Rd
Cobble Hill, BC V0R 1L3

Our Hours

Monday
8:30 AM5 PM
Tuesday
8:30 AM8 PM
Wednesday
8:30 AM8 PM
Thursday
8:30 AM8 PM
Friday
8:30 AM8 PM
Saturday
8:30 AM5 PM
Sunday
By appointment only

We can’t wait to meet you at our Cobble Hill location. We are located off of Cowichan Bay Road, located close to Drumroasters Coffee.

Contact Us

Phone: 250.743.8899
Fax: 250.743.8898

Our Address

Unit 56 – 1400 Cowichan Bay Rd
Cobble Hill, BC V0R 1L3

Our Hours

Monday
8:30 AM5 PM
Tuesday
8:30 AM8 PM
Wednesday
8:30 AM8 PM
Thursday
8:30 AM8 PM
Friday
8:30 AM8 PM
Saturday
8:30 AM5 PM
Sunday
By appointment only

Lake Cowichan and Area

We are conveniently located in the plaza off of Stanley Road and Cowichan Lake Road. Find us between the IDA Island Pharmacy #2 and Resonance Hearing Clinic.

Contact Us

Phone: 250.749.4440
Fax: 250.749.4448

Our Address

44 Stanley Road
Lake Cowichan, BC V0R 2G0

Our Hours

Monday
Closed
Tuesday
9 AM5 PM
Wednesday
9 AM5 PM
Thursday
9 AM5 PM
Friday
Closed
Weekends
Closed

We are conveniently located in the plaza off of Stanley Road and Cowichan Lake Road. Find us between the IDA Island Pharmacy #2 and Resonance Hearing Clinic.

Contact Us

Phone: 250.749.4440
Fax: 250.749.4448

Our Address

44 Stanley Road
Lake Cowichan, BC V0R 2G0

Our Hours

Monday
Closed
Tuesday
9 AM5 PM
Wednesday
9 AM5 PM
Thursday
9 AM5 PM
Friday
Closed
Weekends
Closed

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