Crutches; Ophthalmometers; Ophthalmoscopes; Artificial eyes; Atomizers sold empty for medical use; Computer displays and computer monitors and controllers therefor used in direct association with medical diagnosis apparatus during the process of diagnosis of a condition in an individual; Crutches and tips therefor; Ear plugs for soundproofing, other than for medical use; Electric hearing aids; Electrically-operated hearing aids; Eye charts for medical examination use; Eye protectors for post-surgery eye protection; Eye testing machines and apparatus; Hearing aids; Hearing aids for the deaf; Intra-ocular lenses; Intraocular lens biometers; Intraocular lenses; Intraocular prostheses in the nature of lenses for surgical implantation; Lenses in the nature of intraocular prosthesis for surgical implantation; Loupes for medical purposes, namely, magnifying glasses that fit on the user's face in the manner of eyeglasses; Magnifying glasses, for medical examination purposes, that fit on the user's face in the manner of eyeglasses; Magnifying glasses, for medical purposes, that fit on the user's face in the manner of eyeglasses; Massage apparatus for eyes; Medical imaging apparatus in the field of iridology, sclerology, rayid and eyology; Medical imaging devices for brain; Ocular implants made of artificial materials; Ophthalmic cameras for medical purposes; Optometric autorefractors; Optometric instruments for locating the optical center of ophthalmic lenses; Optometric instruments, namely, instruments for locating grooves, engravings and other indicia on ophthalmic lenses; Optometric instruments, namely, instruments for measuring the diameter of ophthalmic lenses; Therapeutic eye hydration goggles for the treatment of dry eyes