AbbVie (NYSE:ABBV) subsidiary Allergan has received FDA approval for Vuity (pilocarpine HCl ophthalmic solution), a novel eye drop for treating presbyopia. This common age-related condition leads millions of middle-aged people to acquire reading glasses. Vuity is a once-daily prescription eye drop. Presbyopia, or age-related blurry near vision, can be diagnosed through a basic eye exam…