What colour overlay do I need? Select the text with a white background and click on it. Read through the words for about 1 minute – ...

Look at the words below to see which coloured background reduces your visual stress. Order that colour tinted glasses. Sometime 2 colours can help.

X-Rite's online color challenge and hue test is a free tetrachromatic test that allows you to test your color accuracy and color vision.

The color self-chosen by this test is unlikely to be the same color as your required plastic overlay or tinted glasses, as light works in different ways with ...

Coloured overlays aim to reduce Visual Stress, the perceptual distortions experienced whilst reading text. This can increase reading fluency and speed.

Our new color blind test uses the science of cone isolation to test the sensitivity of each of your eye's three color-sensing cones and scores them.

If you suspect you may have color blindness, Pilestone can provide confirmation. Our online color blind test can help you determine the truth.

Our six unique self-tests are designed to address the different types of problems that respond well to color intervention, such as colored overlays and spectral ...

Find out if you have any traits of Irlen Syndrome with our FREE online Irlen Syndrome quiz. The test asks you about your tendencies, and sees how likely it ...

Irlen Colored Overlays are transparent colored plastic sheets that come in ten different colors ranging from yellow to blue overlays for reading.