What type of instructional material is best for helping students with contrast sensitivity function issues?

The best instructional material for students with contrast sensitivity function issues is documents with high color contrast. High color contrast is essential because it enhances the visibility of text and images against their background, allowing students with contrast sensitivity difficulties to distinguish between different elements more easily. This type of material helps reduce visual strain and increases readability, which is crucial for effective learning.

For students with compromised contrast sensitivity, low contrast materials, such as glossy printed materials or pale colored presentations, can make it extremely challenging to perceive important information. Black and white text can be beneficial, but it may not be as effective as high color contrast when considering variations in background color and overall visibility. Therefore, using documents with high color contrast optimally supports the learning needs of these students.