I’m genuinely curious, because in my head “prescription” is something you need to buy regulated medications. Everyone can buy glasses or contacts here without any prescription.
I’ve heard the word brilleseddel. That’s probably the same. Maybe I’m just the weird one
Prescription just means something was prescribed by a professional. So for example, a doctor can prescribe therapy, a dentist can prescribe antibiotics, and an optician can prescribe spectacle lenses.
As you say, some medicines are regulated, but not all prescriptions are regulated.
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Whilst I'm posting, I might as well say that when I went through the procedure to get the NHS app (supply NHS number, photo and passport scan) they said I was approved for full access. However, when I went to see my record, it was blank. So it's pretty useless.
(I've been trying to work out if I missed some vaccinations, but still have no idea since my parents lost my paper records.)