New THINNER Glasses… Why does everything look smaller?

Hi
So I have just picked up my new pair of glasses, I've been wearing glasses for about 8 years now, and these new glasses have the exact SAME lenses number as my old glasses which I completely adjust with. The only difference is that the optician said that this time he put thinner lenses with higher quality (they are more expensive as well)
BUT everything is smaller now,I'm even having a problem typing this on my iPad because the keyboard is smaller… Is this normal? And will I adjust to these glasses,meaning will everything get back to it's normal size? If so how long will it take, considering that I wear glasses 24/7?

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