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Joomla! Accessibility

You're reading from   Joomla! Accessibility A quick guide to creating accessible websites with Joomla!

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Product type Paperback
Published in Oct 2007
Publisher Packt
ISBN-13 9781847194084
Length 156 pages
Edition 1st Edition
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Concepts
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Toc

Visual Impairment


There are a wide range of visual impairments. I have included some photographic examples here, which simulate some of the more common conditions. They will give you some idea of what the vision of a person with conditions like glaucoma, macular degeneration, etc. can be like.

Following screenshots are of a user getting on a bus in Dublin.

Glaucoma

The following shows a Glaucoma visual sample:

A person with glaucoma may experience loss of their peripheral or side vision. In the early stage glaucoma causes a subtle loss of contrast, which can lead to difficulties seeing things around your environment and certainly lead to difficulty using a computer monitor.

This can lead to what is called 'tunnel vision' where the person can still read and do close-up work but has no side vision.

Macular Degeneration

The following shows a Macular degeneration visual sample:

This condition is quite common amongst older people and causes a loss of vision in the centre of the eye. Reading, writing...

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