The import, export, purchase, sale and trade of glasses, lenses, optical instruments and devices, measuring instruments, electronic devices and other types of devices, as well as parts thereof; all matters related to vision, optics and optometry; the operation of an optical studio and the practice of optometry, including vision testing, creation and adaptation of glasses, contact lenses and any product useful for improving visual acuity; devices, ocular prosthetics, hearing aids and everything related to photography, cinema and optics, instruments and accessories useful for exercising and controlling visual activity; optical components and equipment for signal and light transmission via optical fibers; participation in companies in the sector.