Abbvie Inc.’s FDA clearance of Vuity (pilocarpine HCl ophthalmic solution) 1.25% for the treatment of presbyopia in adults, could bring relief to about 128 million Americans: almost half of the U.S. population, the company said. It’s the first and only eye drop given U.S. regulators’ go-ahead for what’s known as age-related blurry near vision – but plenty more have generated clinical data.