That's because bright light makes your pupil smaller, just like this medication. It's plausible that making things sharper at the expense of making them appear

That's because bright light makes your pupil smaller, just like this medication. It's plausible that making things sharper at the expense of making them appear dimmer would be a good trade for some people sometimes. And you don't have voluntary control over your pupil so this medication could help. But it seems like it would have very limited applicability.