What is the definition of Eligible Vision Enhancing Techniques?

Ah, 'eligible vision enhancing techniques' - a fancy term for anything that promises to make your sight super sharp, like a pair of magic glasses that only work on aliens. It's the kind of thing you might find in a sci-fi movie, where you can suddenly see distant stars and not feel like your eyes are about to get jiggly.

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But let's bring it down to earth, or rather, a bit off-kilter: "After the intergalactic banquet, I decided to apply for 'eligible vision enhancing techniques,' so I got a new pair of eyeglasses that promised to turn my eyes into laser beams. It's like asking a magician to make you see in black and white – a bit more like asking him to make your eyes do a backflip."