Wholesale services and retail services, also via the internet and mail-order, in the field of optical goods; wholesale services and retail services related to optical goods, spectacles, spectacle frames, sunglasses, contact lenses, optical devices and instruments, especially binoculars, telescopes, theatre glasses, magnifying glasses, microscopes, optical glasses, measuring instruments, monocular telescopes, accessories of any kind for the aforementioned goods, namely, spectacle cases, spectacle chains, spectacle straps and containers for spectacles and contact lenses; procurement of contracts for third parties for the purchase and sale of optical goods within the framework of a purchasing cooperation; procurement services for third parties, namely, acquisition of optical goods and opticians services for other companies; compilation of optical goods for third parties for presentation and sales purposes