For those whom are visually challenged, that is, wearing spectacles or contact lenses and progressively more severe -
The Vinux Project may be of assistance.
Vinux 5.0 was released in November, based on Ubuntu 14.04.3, defaults to the Unity DE. With the November release, it is also now available with the Gnome-shell and MATE DEs. My understanding is that you have to install it and get to the login screen to get the options on desktop environments.
I have already tried the LiveCD option with the Unity default, and it is very good.
You can visit -
http://vinuxproject.org/downloads
or SourceForge to obtain.
https://groups.google.com/forum/#!topic/vinux-support/TBV4G90_V1E
... answers questions on how to activate MATE DE.
Be aware that Vinux ships with the Orca Screenreader, and that is enabled by default to begin when you begin (at least, that is the case Live). If you do not need that, or it annoys you, you can switch it off, but you may find it hard to find where.
If that is the case, check with me at Visually Challenged (NOT here) and I will assist.
1002 Richard S put me on to this some time ago, thanks Richard.
:wizardball: Wiz
A Happy New Year to all