MRCP UK EXAMINATIONS

NEUROLOGY

SURGERY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The most common color vision test is performed using ____
A
iridotomy
B
trabeculoplasty
C
Ishihara polychromatic plates
D
polarimetry
Explanation: 

Detailed explanation-1: -Color plate test This is the most common type of color blindness test. Your eye doctor will ask you to look at an image made up of colored dots with a differently colored number or shape in the middle. If the shape blends into the background and you can’t see it, you may have a type of color blindness.

Detailed explanation-2: -The Ishihara plates are widely used as a test for colour vision. Originally designed for the purpose of detecting congenital red-green colour blindness, the test also has some value in demonstrating acquired colour vision defects.

Detailed explanation-3: -Ishihara’s test relies on 38 numbered plates. Each plate displays a mosaic of dots in different sizes and colors. The image each card makes up is that of a number spelled out in one or two colors, set against a circular background composed of one or two different colors that contrast to varying degrees.

Detailed explanation-4: -There are many tests available to measure colour vision defects but the most common is the Ishihara Plate test. This can test for red/green colour blindness but not blue colour blindness.

There is 1 question to complete.