Keratometers; Keratoscopes; Ophthalmoscopes; Skiascopes; Tonometers; Artificial eyes; Catgut for surgical use; Eye testing apparatus; Intraocular lenses; Intraocular prostheses in the nature of lenses for surgical implantation; Medical apparatus and instruments for use in surgery; Surgical apparatus for use in ophthalmic surgery; Surgical instruments and apparatus; Suture materials; Thread for medical use; Thread, surgical; Ultrasonic medical diagnostic apparatus; Ultrasonic therapy apparatus...