1. Using a device known as a tonometer, an eye specialist may start by checking the fluid pressure in your eyes.

2. Medical, surgical, ophthalmic, ocular, refractive, and eye-related lasers, aberrometers, topographers, microkeratomes, keratomes and blades, phacoemulsification devices, hand held ophthalmic surgical instruments, endoscopes, tonometers and corneal shields

3. Medical, surgical, ophthalmic, ocular, refractive, and eye-related lasers for medical and surgical use, aberrometers, topographers, microkeratomes, keratomes and blades, phacoemulsification devices, hand held ophthalmic surgical instruments, endoscopes, tonometers and corneal shields

4. Ophthalmological and optical diagnostic, testing and surgical apparatus, machines, instruments and equipment including tonometers, adaptometers, aberrometers, keratomes, refractometers, refractors, auto refractors, topographers, lensmeters, pachymeters, exam chairs, instrument stands, slit lamp microscopes, eye testing chart projectors

5. Retail and wholesale services in relation to medical and surgical diagnostic and testing apparatus, machines, instruments and equipment, ophthalmological and optical diagnostic, testing and surgical apparatus, machines, instruments and equipment including tonometers, adaptometers, aberrometers, keratomes, refractometers, refractors, auto refractors, topographers, lensmeters, pachymeters, exam chairs, instrument stands, slit lamp microscopes, eye testing chart projectors and parts, fittings and accessories for the aforesaid goods