Wiki
Table of Contents
< All Topics
Print

Vision Test – Ishihara

The Ishihara test is designed to test candidates and employees for colorblindness. The test consists of either 24 or 38 color plates. Each plate is a circle made up of various dots that range in color and size. The examiner presents each plate individually for approximately five seconds. It is the goal of the testee to recognize the differently colored numbers within the circle. If they are not able to do so, it suggests a deficiency in color vision. 

Recent posts

Report Finds Surging Fatalities Among Hispanic Construction Workers

The construction industry is changing, and one of the most notable shifts is the growing presence of Hispanic ...
Read More

Survey Finds Decline in Ladder-Related Serious Injuries and Fatalities

Ladder-related serious injuries and fatalities (SIFs) have decreased by 21% over the past five years, according to the ...
Read More

Protecting Workers from Carbon Tetrachloride Exposure

The Environmental Protection Agency (EPA) has finalized a rule to protect workers from the health hazards associated with ...
Read More
Scroll to Top