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> My optometrist said that wearing glasses would speed the slide

This is a myth widespread among opticians and optometrists. I have discussed it with those who treated me and not a single one could provide any evidence.

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On several occasions I’ve been the the optician and found my eyesight had gotten better. For me, at least, this myth is evidently false.

Speed the slide = you notice

That's the interesting part to me. I have very very very slight glasses. If I never put them on, it's fine. If I've been wearing them, and THEN take them off, everything looks horrible.

I mostly only wear reading glasses at work.

Happens to me when I switch between contacts and glasses despite the same prescription (well, not that everything looks horrible, but that I notice how accustomed I am to the peculiar way glasses shape the world for a few hours). I wouldn't attribute too much to it.

You'll even notice it if you change the type of lens, to a higher or lower index.

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