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Red or Green? This Colour-Blind Test Will Show If You Can Tell Two Shades Apart 

Red and green colour blindness can stem from various factors. Take this colour-blind test to check if you have the condition.

Woman seated in a chair and looking at a book containing images of dotted plates.

Red-green colour blindness often goes undiagnosed. A common condition, a person who has it will find it difficult to see shades of red, green, or yellow. The good news is, there are colour-blind tests that can identify if you suffer from this vision disorder.

The Ishihara test is one colour-blind test that involves looking at images made up of coloured dots and pointing out a differently coloured object or number in the middle. Although this colour-blind test doesn’t qualify as a clinical diagnosis, it can still help determine if you have red and green colour blindness. 

What are the Risk Factors Associated with Colour Blindness?

Graphic depiction of a man with Alzheimer’s disease’s head disappearing as he looks at a device while holding his forehead with his left hand.
Alzheimer’s disease is a prominent risk factor for red and green colour blindness.

Men are more likely than women to develop colour blindness. But you may be at an increased risk of the condition if you: 

  • Take certain types of medication for high blood pressure, mental health disorders, autoimmune diseases and infections 
  • Suffer physical damage to your eye or brain 
  • Have a family history of colour blindness 
  • Have been diagnosed with other eye conditions, such as glaucoma, cataracts or age-related macular degeneration 
  • Have been diagnosed with chronic conditions like diabetes, Alzheimer’s disease, or multiple sclerosis 

Traditional Chinese Medicine (TCM) believes the condition stems from genetic or acquired factors. But both types share similar pathogens, including: 

  • Blood clots 
  • Liver Blood Deficiency 
  • Spleen Qi Deficiency 
  • Heart Yang (active energy) Deficiency 
  • Kidney Yin (passive energy) Deficiency 
  • Qi (vital life force) Stagnation 

Remedies That Help You Differentiate Between Shades after a Colour-Blind Test 

There’s no cure for colour blindness, but you can use technology or certain devices to identify different hues. TCM may be able to help improve vision quality through natural decoctions and acupressure massages. 

Close-up of a red-green colour blindness trial lens set.
An optometrist will test your eyesight and customise your eyeglasses so you can distinguish different colours.

Use of speciality visual aids 

You can wear special eyeglasses or contact lenses to help you differentiate colours. Mobile phone applications may be used for the same effect. It’ll reveal the colours in a specific area of a selected photo. 

Use of herbal formulas that tackle the underlying causes 

Real Health Medical’s Senior Physician Brandon Yew says natural formulas can improve colour blindness by addressing specific body constitution imbalances. For example: 

  • Bao Yuan Tang (保元汤): Regenerates Heart yang to dispel Cold, and nourish and improve blood and qi circulation to the eyes 
  • Long Dan Xie Gan Tang (龙胆泻肝汤): Dispels Liver Fire and Dampness, and regenerates Liver blood and yin to nourish the eyes 
  • Di Tan Tang (涤痰汤): Dispels phlegm and Dampness from the head and restores and enhances blood and qi circulation to the eyes 
  • Chai Hu Shu Gan San (柴胡疏肝散): Dispels Qi Stagnation, blood clots, phlegm and Dampness from the Liver, and restores and enhances blood and qi circulation to the eyes 
  • Bu Zhong Yi Qi Tang (补中益气汤): Strengthens Spleen qi to promote better blood and qi circulation to the eyes 

Massage distal and localised points on the body 

Massaging acupressure points can help you live with colour blindness in two ways.

Localised Points Distal Points 
Jing ming (BL1, 睛明) Kun lun (BL60, 昆仑) 
Yang bai (GB14, 阳白) Luo zhen (EXUE8, 落枕) 
Feng chi (GB20, 风池) Guang ming (GB37, 光明) 
Tai yang (EX-HN5, 太阳) Tai xi (KI3, 太溪) 
Yi ming (EX-HN14, 翳明) He gu (LI4, 合谷) 
Cheng qi (ST1, 承泣) Xing jian (LR2, 行间) 
Si bai (ST2, 四白) Yang lao (SI6, 养老) 
 Zhong zhu (SJ3, 中渚) 
 San yin jiao (SP6, 三阴交)

Localised acupressure points

Areas of your body that are experiencing pain or tension are known as localised acupressure points. Massaging these points can help relieve symptoms by promoting blood and qi circulation.

Distal acupressure points

Areas of your body that aren’t painful are known as distal sites. These body parts contain acupressure points that can be activated to relieve symptoms by eliminating pathogens and improving Deficiencies.

If you don’t have colour blindness, consider yourself lucky, as it can pose challenges to daily life. But if you’ve been diagnosed with the condition, early intervention can help you to see normally.

Physician Yew explains, “Herbal formulas target the various pathological states of colour blindness and only correct unbalanced body constitutions. Acupressure stimulation acts as a supplementary treatment to acupuncture.” 

“Acupuncture provides a more potent and comprehensive therapeutic effect on the imbalances which provoke colour blindness onset. It’s advisable to refrain from self-medicating without prior consultation with a TCM practitioner as it’ll minimise undesirable side effects and other health complications,” he adds.

If this colour-blind test has helped you identify if you potentially have the condition, share it with family and friends who may also be at risk.


  1. International Specialist Eye Centre. COLOUR BLINDNESS – PATIENT INFORMATION. [online] [Accessed 12 October 2022] 
  2. National Eye Institute. Testing for Color Blindness. [online] [Accessed 12 October 2022] 
  3. Colour Blind Awareness. About Colour Blindness – Treatment. [online] [Accessed 12 October 2022] 

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