I had a MRI scan because I have NF earlier this year.
I been looking at my eyes, I probably had it there years, white light reflecting across eyeball in certain lights it not there,
I also had a white bright flash for a few seconds like a floater, in one my eyes, sometimes I get blurred vision when I am tired, nervous scared etc.
My brain scan was clear last time and the thing I have got there (not a cancerous lump) has not changed shape, size etc.
I do go for eye tests regularly. so eye cancer, brain tumours can be picked up.
I read about laser pens, I dont use them, but worry that light can be reflected through the curtains if someone being naughty shining these pens if the curtains are sllighty opened.