general accessibility question

Hello all

I am a blind user of operating systems. I am using Windows as my 
mainstream OS, for years, but I am searching an accessible linux distro 
or something like this.

I've seen that there is a couple of accessible distros, like Vinux or 
Sonar, but both are discontinued and deprecated

I use to work with debian, because I know the basic commands and I am 
able to use the terminal. But the problem comes when I want to find an 
accessible and lightweight desktop environment. Most desktop 
environments are unaccessible, and I've tried gnome, but I don't like 
it, there are so much things that Orca don't read properly, like the 
left side bar, wich contains application icons, and I  don't like the 
searcher that appears when I press the Super key, I think the gnome 
desktop is the worst accessible desktop I've seen, but a lot of people 
talks about it as the best accessible desktop, I suppose that they say 
this because Orca is based on gnome desktop.

Okay, my main question is, is KDE desktop accessible? Does it uses Orca 
as screen reader? or there are other screen readers on KDE desktop?

thanks in advance