Lost - special blue tinted glasses that reduce visual stress

[uklains]

My daughter left her expensive special blue / teal tinted glasses that reduce visual stress in the toilets in Dulwich park (by the cafe) on Thursday afternoon whilst on a school trip. They look more like sunglasses than reading glasses and there is no prescription in them, however the glass is a special blend of three colours to make the special colour for my daughter's eyes to assist her with reading. They also have a blue frame.

I checked a couple of hours later (around 6pm) and they weren't there and the cafe was closed.

Any chance anyone picked them up or seen any posting about them in other groups / forums?

They've not been handed in yet to the cafe nor to the park attendant.

Attached is a picture of her with the glasses on and showing the card that the lens is a special precision tint.