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Personalized Lenses That Will Change Your Vision and Life

By Essilor Canada

When we choose new glasses, we spend a lot of time selecting the frame. It's an important component as it becomes an intrinsic part of our look. We select styles that suit the shape of the face — frames with angles are recommended for round faces, while oversized frames suit a rectangular face. Learn more about which style will suit your face by reading The perfect frame for every face. But what about personalizing your lenses? This isn't about the prescription designed to correct your sight. We're referring to different technologies that adapt your lenses to your lifestyle, all with the aim of offering you optimal vision.

Beyond correcting your vision, there are several parameters that can influence the quality of your vision. Just as each person's face is unique, each person's vision is also unique. In order to ensure optimal vision, you can select personalized lenses that are custom-made to both your physiology and the frame you have chosen.

Several factors are taken into consideration including the vertex distance which is the measurement between the glasses and the eyes. This is what maximizes the clarity of your field of vision. We also have to calculate the curve angle which measures the curve of the frame, and therefore, of the glasses. When you wear your frames, a curve is created automatically and the axis of the gaze is no longer perpendicular to the glasses. This must be taken into account when the eyecare professional puts your new lenses into your frame. This measurement reduces the distortions that occur due to the curve of the glasses relative to the gaze. Finally, the pantoscopic angle measures the inclination of the glasses. It represents the angle of the glasses relative to a vertical axis when the frame is placed upon your nose. This measurement reduces the distortions caused by the angle of the glasses in relation to your eyes.

We each have our own way of moving our eyes. Unconsciously, our vision develops reflexes, ways of reacting and personalized movements. This physiological measurement locates the centre of rotation of your eye that will then serve as the centre point for your lens. Eyecode technology brings visual comfort that is available for both single vision and progressive lenses.

All of these measurements are taken by your eyecare professional. In fact, during your next exam or the next purchase of new frames, three types of measurements will be taken. This includes data on your selected frame and how you wear it, the data about your eyes collected through Eyecode as well as your behavioural data that relates to the physical aspects of your face such as its positioning, the size of your nose and the space between your eyes. In short, a wealth of personalized information will be used to optimize your vision. After all, it's up to your glasses to adapt to you and not the other way around!