Alcon Inc. is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. Alcon was a subsidiary of Novartis until April 2019, when it was spun out into a separate publicly traded company. Alcon itself has a number of subsidiaries, including Aerie Pharmaceuticals, focused on therapies for glaucoma and other diseases of the eye, and WaveLight, which develops and manufactures laser eye surgery technologies. Wikipedia