Multifocal measurement device
Ocular parameter measuring device
Ocular parameter measuring device with digitally controlled virt
Ophthalmic apparatus
Ophthalmic measuring apparatus
Ophthalmologic measuring system
Optical measurement method and apparatus
Optical system for an ophthamological instrument for examination
Optician's ruler with sliding height indicator
Optometric apparatus
Portable digital vertical pupil meter
Process for preparation of spectacles
Pupil center determination recorder
Pupil location gauge
Pupilometer
Refractor suspension system
System for making spectacles to order
Universal frame centering, holding and measuring device