Since I wrote that page about vision I've learnt a lot more.
The root cause of your DDs SpLD may be solely vision - and certainly correcting her vision problems will help her SpLD.
But it's more likely that it's the same thing that is causing her vision problems / SpLD is causing her challenging behaviour.
The root cause being cerebellum deficit.
And if you do a neuro-development therapy you will cure both her SpLD and her behaviour problems.
The therapy my 2 kids are doing is Tinsley House, and we have had amazing results.
It includes vision therapy - which will absolutely cure her vision problems.
(Vision therapy is computer software to train the muscles in the eye which are causing the binocular instability.)
It's also cured DDs auditory memory problems and her slow processing.
She's now for the first time ever learning to read and spell.
Within 2 weeks of starting the therapy her word finding problems disappeared... which meant she was now able to learn in class.
Behaviour of both kids has also totally changed. For the first time ever DS is showing empathy.