Color Blindness TREATMENT Center
Dev Antarashtriya Yog Kendra, Geeta Nagar, Kanpur - 208025
Mobile --- 9336115528, 9336235850
E-mail --- anandyoga133@gmail.com
Facebook --- YogRishi Om Prakash 'Anandji'
Dr Shinobu Ishihara introduced in 1917, almost 100 years ago, the most well known color blindness test. Each of his tests consists of a set of colored dotted plates, each of them showing either a number or a path. Since then, this is the most widely used color vision deficiency test and is still used by most optometrists and ophthalmologists all around the world.
There exist four different types of plates:
Vanishing design: Only people with good color vision can see the sign. If you are colorblind, you won’t see anything.
Transformation design: Color blind people will see a different sign than people with no color vision handicap.
Hidden digit design: Only colorblind people are able to spot the sign. If you have perfect color vision, you won’t be able to see it.
Classification design: This is used to differentiate between the type of color vision defect (protonopia or deuteranopia) and the severity of it.
12
All people should see a number 12, including those with total color blindness.
If someone said they can’t see anything, or saw something else – they are lying.
29 --- Those with normal color vision see a 29.
70 --- Those with red green color blindness see a 70.
Nothing --- Those with total color blindness see nothing.
5 --- Those with normal color vision see a 5.
2 --- Those with red green color blindness see a 2.
Nothing --- Those with total color blindness see nothing.
3 --- Those with normal color vision see a 3.
5 --- Those with red green color blindness see a 5.
Nothing --- Those with total color blindness see nothing.
15 --- Those with normal color vision see a 15.
17 --- Those with red green color blindness see a 17.
Nothing --- Those with total color blindness see nothing.
OTHER ISHAHARA TEST PLATES
