How are Persona high definition lenses made?

The Persona is the culmination of many technologies, including complex lens design software, CNC multi axis machines and laser science. It is the result of many years of R&D in the optical community to arrive at a viable lens product that performs at a level far beyond the previous benchmark for visual clarity.

To create a Persona lens, the laboratory computes the patient prescription, frame and fitting measurements and lens material choice. The lens design software then calculates a point file, which instructs the CNC machines the tool path to follow. There are two similar CNC machines which create the complex surface geometry; the first a generator which removes excess lens material and prepares the surface for polishing, and the second, a polisher, which follows the identical tool path as the generator to ensure the entire surface geometry is polished completely.

The final step is to engrave semi-visible reference markings onto the lens surface for subsequent processing and identification. These engravings are performed by a task specific CNC laser instrument which uses the same lens database as the CNC machines to precisely engrave the marking onto the lens.

An inspection follows to ensure that the Persona lenses meet the stringent requirements demanded by the laboratory so that every wearer of Persona high definition lenses will be entirely delighted with their new lenses. Rigorous quality assurance procedures are in place to maintain all processes at their optimum levels of performance.

The final step in preparing the lenses for wear is to size, shape and mount the lenses into the patient’s frame. The laboratory uses sophisticated edging machines to contour the lenses, and skilled technicians to assemble the lenses into the frame. A final all inclusive quality control inspection completes the fabrication steps, prior to delivering the completed glasses to the Eye Care Professional, who in turn will dispense the glasses to the patient.