Using the Impairment Visualizer
Using the Impairment Visualizer
Do these steps to have Bloom simulate visual impairments:
-
In the Pages pane, click a page that has an image.
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Click the
Impairment Visualizer tab in the tool box. -
Select (
) one or both of these visual impairments:
Cataracts
Color Blindness. Then, select (
) a type of color blindness.
-
-
If the image becomes too difficult to see, choose a different image. Otherwise, edit the image in an editing tool to change the colors, contrast levels, line densities and so on.
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Select (
) a different type of color blindness and examine the image again. -
Click the next page that has an image. Examine the image. Edit or replace each image as necessary.
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-
Clear (
) the check boxes to stop the simulation after you have examined and corrected image problems on all the pages that have an image.
Note
- Types (Red-Green, Blue-Yellow or Complete) are described here:
http://www.colourblindawareness.org/colour-blindness/types-of-colour-blindness/
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Editing images, whether they are line drawing or photographs, are beyond the scope of these Bloom Helps. Numerous sites on the Internet describe and review image editing software.
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No essential information by color is a checklist item in the Bloom Accessibility Checker dialog box.