Really unusual sensory issue- help!

Tbh tinted glasses won’t help. If a particular stimulus is too off putting and you can’t remove the stimulus the solution is often a more overt stimulus that’s more tolerable. For example if if background noises are distracting sometime listening to music can help you focus. I guess the visual equivalent might be decorating her work space some how? With something she finds less stressful than dots?

My student is brilliant at Maths and computer science, but the dots are stopping her accessing her lessons. I’m going to suggest some therapy for trichophobia and try the coloured overlays. Synethesia is a good shout. If she could  view as as a kind of visual super power it might help. Thank you everyone 

Tinted glasses generally are for Irlen's syndrome; a sensory problem processing the light Spectrum which can make text dance amongst other things. My optician prescribes them for me. They are likely to help your student only if something like that is behind the fear. It won't hurt to try some  cheap coloured overlays to see, but you may also both be barking up the wrong tree with that.

We are generally hyper sensitive to patterns and spot them everywhere, it's what gives some of us our strengths. Your student is clearly finding this overwhelming. And I think Mariusz is right, your student may well have Synesthesia. I do. I have strong disgust reactions to those nasty round things that fasten clothes, for example. Even the word can kind of conjure them such that I can feel them - ugh. Puke! I've sort of had to train myself to avert my gaze when others are wearing them.

But my Synesthesia is fun too. People's names have colour. I wouldn't wish it away.

May be your student needs some occupational therapy to try and find a few ways to try and screen them out a bit. It's tough. Is your student also deriving any academic benefit from pattern spotting? Appreciating that might help psychologically with the toleration of it, even if they need it in small doses so as not to be overwhelmed.

That reminds me of pointillism  https://www.artrust.ch/pointillism-point-by-point/?lang=en Maybe she needs to get fully familiar with the details before she can focuss out on the big picture. 

Could be trypophobia rather than a purely visual issue?

www.healthline.com/.../trypophobia

it's stressful now because she doesn't understand it, but why block it straight away? what if it's some manifestation of synesthesia in it's myriad forms, like that  autiistic math genius who can see geometric figures in various colours allowing him to calculate things unimaginable?  but what it could be, I have no idea atm, I wish I had it though

and everything is made of dots