What to do for sudden vision disturbance in lazy eye?

Hi doctor,

I have a congenital left lazy eye, which wanders outwards and upwards. This is managed by prism glasses, currently 7 base vertically and 2 horizontally. I am managing my eye strain and daily life well in general. I do however have occasional episodes, which are not manageable. Sometimes, months apart and sometimes every other day, I have a very short (around 1/2 second), but very violent twist in my vision. There is no warning for this. I have experienced it while sitting, driving and standing. Afterwards, I feel very unbalanced for a few minutes and then fine. The only other symptom is my head feels like it has been pulled on the top and I have ringing in my ears afterwards. I have had three MRI scans in the last 18 months, because the diplopia onset was quite sudden and experienced a lot of pain in my head and face. These have all been clear. I do not seem to have any warning when these episodes occur and they are so sporadic at times. It is difficult to tell what exactly it is. I am also unsure, because it is too fast, whether it is just my left eye or both. Any opinions would be greatly appreciated. Apart from eye strain, which does happen occasionally, I do not have any other symptoms. I regularly do convergence disorder exercises to stop straining and it works. Kindly help.