why does light passing through eye glasses not matter where your glasses are positioned to enter your eye correctly?

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why does light passing through eye glasses not matter where your glasses are positioned to enter your eye correctly?

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I’ve noticed that when I take my glasses off, the TV is in focus even when the glasses are a foot or two in front of my face, the same as when on my face which contradicts optic physics formulae we learned dealing with light and object distance.