There are many conditions that can make accessing digital documents, therefore your pattern, difficult. Here are a few conditions and examples why they would struggle.
People who cannot read a computer screen often use a technology called a screen reader.
Screen readers will read outloud the content on a computer screen so that a user can listen to the information rather than read it.
Screen readers are a technology with limitations like anything else. They do not read documents the way we do visually.
When making a document you have to understand these simple limitations and how to account for them, which we will do in the next sections.
The main hurdle for color blindness is called using color to convey meaning. This is when color is the only way that information is being given.
For example, say you have a pattern where certain rows need beads and other rows do not. One way to indicate the beaded rows in a chart would be to draw those rows
in the color red. This may be difficult to impossible for a red-green color blind person to distinguish the red rows from the non-red rows.
A solution is to write out above the chart which rows need beads.
Learning disabilities come in many shapes and forms, and there is no easy way to summarize each one and their impacts on how it would relate to learning a crochet pattern.
A few examples would be: