Coml Physical Research Mfg Optical Instr/Lens Mfg Measure/Control Dvcs Mfg Analytical Instr Ophthalmic photometers, Ophthalmic prisms, Ophthalmic retinoscopes, Ophthalmic slit lamps, Ophthalmic spectrophotometers, Ophthalmic specula, Ophthalmic tonometers or accessories, Ophthalmic transilluminators, Ophthalmic visual field plotters