QUADVIEW
Vision testing devices, namely, subjective refractors and phoropters for testing for optical aberrations and optical disorders, diagnosing or aiding a practitioner in diagnosing optical aberrations and optical disorders, and determining corrective prescriptions and corrective surgery; vision testing devices implementing digital vision testing, namely, subjective refractors and phoropters using light field technology to display differing corrective image data to determine or aid a practitioner...
Pending · February 27, 2023 · 97813089 ·