🌈Colour Blindness (Colour Vision Deficiency) 🔹 Vision 20 20 | Mamta Verma (Optometrist) 🟡 What is Colour Blindness? Colour blindness means difficulty in identifying certain colours—mostly red, green, or blue. It happens when the cone cells in the retina do not work properly. 🔹 Types of Colour Blindness Red-Green Colour Blindness (most common) Blue-Yellow Colour Blindness Complete Colour Blindness (Achromatopsia) – very rare 🔹 Causes Genetic (present from birth) Optic nerve diseases Cataract

14K views · 94 reactions | What is colour blindness? Colour (color) blindness (colour vision deficiency, or CVD) affects approximately 1 in 12 men (8%) and 1 in 200 women in the world. Take this test to check if you are suffering from CVD. This test is mandatory in some countires for a Driving License - It is called the Ishihara test. Share this test with your loved ones. | ROADS.sg | Facebook