EssilorLuxottica SA engages in the design, manufacture, and distribution of ophthalmic lenses, frames and sunglasses. The company is headquartered in Charenton-Le-Pont, Ile-De-France and currently employs 189,788 full-time employees. The firm designs, manufactures and markets a range of lenses, frames and sunglasses to improve and protect eyesight. The company also develops and markets equipment for prescription laboratories and instruments, and services for eye care professionals. The company operates through three segments: Lenses and Optical Instruments, which includes corrective lenses, optical instruments intended for opticians and optometrists; Equipment, which includes machines and consumables used by plants and prescription laboratories, and Sunglasses & Readers, which encompasses non-prescription reading glasses and non-prescription sunglasses.