Question

how are high contrasts and magnifier options useful for people with visual impairments ​

Answer 1

Answer:

it is because light receptors are not as good as normal people .

visual impairment are advised to use warm lights like reddish etc. be away from bluish or cool colour lights

Answer 2

High Contrast is designed for people who have vision impairment. High contrast colour schemes can make the screen easier to view for some users by heightening screen contrast with alternative colour combinations. Some of the schemes also change font sizes for easier reading. click Accessibility Options.