Contact Us For non-US Customer Service contact the local country office. Consumer Care U.S. T 1 800 757 9195. Hours: Monday-Friday. 8 am – 5 pm. (Central U.S. Time) U.S. Vision Care. OTC/Contact Lens. T 1 800 241 5999. Hours: Monday-Friday. 7:30 am – 6 pm. ... U.S. Surgical. T 1 800 TO ALCON. 1 800 862 5266. Hours: Monday-Friday.