Microscopes; Microtomes; Rangefinders; Refractometers; Laboratory equipment and supplies, namely, thermometers; Laboratory equipment, namely, electric bath heaters; Laboratory equipment, namely, spectroscopes; Liquid crystal display (LCD) projectors; Microscope condensers; Ophthalmic lenses; Optical frames; Optical glasses; Optical lenses; Optical lenses featuring anti-fog coatings, UV-blocking treatment, anti-scratch coatings; Prisms for optics purposes