35 Retail services by direct solicitation by sales agents in the field of ophthalmic diagnostic equipment; assistance and advice regarding business organization of an ophthalmological practice through use of proprietary ophthalmological equipment and systems and methods and the promotion of business opportunities thereof; On-line retail store services featuring ophthalmic diagnostic equipment, namely, keratometers, hand-held keratometers, refractors, automated refractors, wavefront aberrometers, topographers, and pupillometers; Retail store services featuring sales by direct solicitation by sales agents in the field of ophthalmic diagnostic equipment, namely, keratometers, hand-held keratometers, refractors, automated refractors, wavefront aberrometers, topographers and pupillometers