Features
Ranges of 1- to 16-times magnification are common. The greater the magnification the smaller the proportion of the original screen content that can be viewed, so users will tend to use the lowest magnification they can manage.
Screen magnifiers commonly provide several other features for people with particular sight difficulties:
- Color Inversion. Many people with visual impairments prefer to invert the colors, typically turning text from black-on-white to white-on-black. This can reduce screen glare and is useful for elderly people suffering from age-related macular degeneration.
- Smoothing Text can become blocky and harder to recognise when enlarged. Some screen magnifiers anti-alias or smooth text to compensate.
- Cursor customisation. The mouse and text cursors can often be modified in several ways, such as circling it to help the user locate it on the screen.
- Different Magnification Modes Screen magnifiers can alter how they present the enlarged portion: covering the full screen, providing a lens that is moved around the un-magnified screen, or using a fixed magnified portion.
- Screen reader. Some magnifiers come packaged with a basic screen reader, allowing whatever the user is pointing at to be read out.
Read more about this topic: Screen Magnifier
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