Final answer:
To make his presentation accessible for people with low vision using screen readers, Kevin should add alternative text to images, charts, and graphics. This ensures users can 'hear' the visual information via screen readers. He should also provide transcripts and captions for media and follow WCAG to enhance overall accessibility.
Step-by-step explanation:
Kevin should add alternative text to images, charts, and other graphics in his presentation to ensure that it is accessible to people with low vision who use a screen reader. Alternative text provides a text-based description of visual content, which allows screen readers to convey the information that the image or graphic represents to users who may not be able to see it. It's important to write meaningful alternative text that helps readers understand both the information portrayed in the image and its significance within the presentation.
To improve accessibility further, Kevin should also consider providing transcripts for any audiovisual content, such as videos or podcasts, and ensure that captions are available for any spoken information. By maintaining a consistent visual style and ensuring that visuals are large enough, Kevin can make his presentation more accessible to a wider audience. These considerations are in accordance with the Web Content Accessibility Guidelines (WCAG) which aim to make content accessible for all users, regardless of their abilities.