>>35454184I suppose some Pokemon might wear non-prescription lenses. That's already happened in the anime, and can happen in the games too: we can give Wise Glasses, Black Glasses, and Choice Specs to our Pokemon, as other anons have mentioned.
However, I consider it unlikely that Pokemon would wear corrective lenses. I don't think we've ever seen a Pokemon wearing corrective lenses in canon, which strongly suggests that Pokemon don't use them or need them. This may be because wild Pokemon with poor eyesight are more likely to get killed before they can pass down their genes, which would induce natural selection and lower the number of Pokemon with vision problems (assuming the vision problems are genetic). Alternatively, some Pokemon with poor eyesight may not require glasses because their other senses are strong enough to compensate. For instance, a canine Pokemon might have a strong sense of smell, just like a real dog, and be able to use it to make up for poor eyesight.
Granted, Pokemon could conceivably need and wear glasses in some circumstances. If a Pokemon gets caught and trained, and its descendants start living with humans for generations, that would remove the selective pressures present in the wild and possibly allow poor-eyesight genes to arise and spread, which could result in Pokemon needing to wear glasses. Also, if a wild Pokemon with bad vision manages to stay alive until it gets caught by a trainer, said trainer might choose to give that Pokemon glasses. So there are ways that a Pokemon might logically wear corrective lenses, but I still strikes me as a rare occurrence.
One more thing. This talk about glasses is making me think of a question of my own: if a Pokemon wears glasses, does that make it "too human-like"? I don't mean to open a can of worms, but I've noticed that many folks in the writethread seem to hate when Pokemon are depicted as too similar to humans, so I wonder if giving them glasses would be an example of such a depiction.