Advertising; business management; business administration; office functions; direct mail advertising (leaflets, prospectuses, printed matter, samples); business management and organization consultancy; accounting; computerized file management; organization of exhibitions for commercial or advertising purposes; online advertising on a computer network; rental of advertising time on all communication media; publication of advertising texts; rental of advertising space; dissemination of advertisements; sales volume tracking for others (commercial business management) and sales promotion for others; presentation of goods on all communication media, for retail sale; retail sale of optical spectacles, sunglasses, magnifying glasses, lenses, spectacle cases and cases for lenses, products and solutions for cleaning spectacles and lenses, hearing aids and accessories; organization of promotional operations with a view to customer loyalty; organization of exhibitions, for commercial or advertising purposes, of goods or services in the field of optics and hearing; the bringing together for the benefit of others (excluding the transport thereof) of optical goods and hearing aids; provision of information and advice to consumers regarding the selection of optical goods, optical articles and hearing aids, for sales purposes; presentation of optical goods, optical articles and hearing aids on all communication media in the framework of retail sale; on-line retail store services for optical goods, optical articles and hearing aids