Color vision testing with HRR plates

👀 Watch the video for a full demonstration and explanation of HRR plates.

Color vision can be tested in several different ways - Ishihara color plates (ICP), Hardy Rand Rittler (HRR) plates, Farnsworth D-15, and Farnsworth Munsell 100 test.

But which one is best? 🧐

My preference is the HRR plates for three reasons -

✅ HRR tests both blue-yellow and red- green deficiencies while ICP can pick up red-green.

✅ HRR picks up both congenital and acquired color deficiencies while ICP is designed for congenital

✅ HRR can be used for patients with decreased acuity down to 20/200 while ICP is valid only up to 20/60 based on the resolution of the dots.

Just to be fair- what is the downside of HRRs?

Some patients simply don’t understand the test. They may prefer identifying numbers on ICP 🔢 rather than shapes on HRR. 🔼⏺

Which one is your preference? Comment below!👇🏼

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