The technology in terms of ophthalmic lenses continues to improve. Customization options are increasing year by year and now allow Opto-Réseau's independent eye care professionals to recommend the best combination for your needs.

Here is some information to help you see more clearly.


Types of Correction

Myopia and Hyperopia

The most well-known visual disorders, myopia (difficulty seeing in the distance) and hyperopia (difficulty seeing nearby objects) can be corrected with single vision ophthalmic lenses. As their name suggests, single-vision (or unifocal) lenses provide the same correction over the entire lens to enhance either near vision or distance vision.

Lentille ophtalmique simple vision Single vision ophthalmic lens

Specialized single vision glasses are also designed to reduce eye strain while using digital devices, such as Essilor Eyezen lenses, Nikon Smart Boost lenses or Zeiss Digital Lens.


Presbyopia, like death and taxes, is inevitable. Even people who have never been nearsighted, farsighted or astigmatic will become presbyopic during their forties, that is to say that the lens of their eyes will lose its flexibility and will no longer be able to focus on nearby objects.

Depending on your needs and your prescription, your Opto-Réseau optometrist may recommend progressive ophthalmic lenses, proximity lenses (for computer work, for example), reading glasses (single vision), bi-focal lenses, tri-focal lenses or a combination of several pairs of glasses.

Progressive lenses allow clear vision at all distances. The upper part of the lens ensures far vision, while the lower part ensures close vision. The transition between the zones is fluid and the intermediate vision in the center of the lens is quite functional.

Lentille ophtalmique progressive Progressive ophthalmic lens

The wide selection of progressive lenses available at Opto-Réseau clinics includes Essilor's Varilux X series and E series lenses, Nikon's SeeMax range and the Precision range by Zeiss.

Depending on your visual needs, your work environment or your hobbies, your Opto-Réseau eye care professional may also recommend specialty lenses such as Essilor's Varilux Digitime lenses or Nikon's Online Wide NEO lenses.





Ophthalmic lenses are now almost all composed of synthetic resin, since they can be very thin and adapt to any type of frame. Organic glasses are the most popular because they are lightweight and impact resistant. A small disadvantage is that organic glasses are scratched more easily, because they are more flexible. It is for this reason that they are always accompanied by a scratch-resistant treatment.


The composition of polycarbonate lenses is similar to that of organic glasses, with the difference that they are much more resistant to impact. This material is also used for safety glasses. The lightness and shock resistance of these lenses make it a product of choice for children and teenagers, or very sporty people. 


Mineral glasses, once widely used, are less favoured today, except to deal with very high levels of correction. Because they are made of actual glass, mineral lenses are more fragile and heavier than the other materials presented above. There are now very thin plastic glasses that can replace them.




Most of the lenses recommended by your eye care professional will include both treatments:

Scratch Resistant

This hardening treatment is applied to the lenses to protect them from dust and abrasions, thus increasing their lifespan.


This comfort coating eliminates glare and improves the perception of contrasts. In addition to improving the appearance of lenses, it has become essential for our mostly digital lifestyle. Indeed, some specialized anti-reflective coatings filter the surrounding blue light, mainly from the sun and screens. In addition, several antire-flective treatments consist of additional layers to repel water, grease and dust, which will facilitate maintenance.

Among the coatings offered in Opto-Réseau clinics, you will find Essilor's Crizal, Nikon's SeeCoat and DuraVision coatings by Zeiss.



Tints and Colours

Regular Sunglass Lenses

Your sunglasses bought at Opto-Réseau are all certified UV 400 and therefore block 100% of UV rays.

Polarized Lenses

Polarized sunglass lenses, like Essilor's Xperio lenses, offer the same protection as regular sunglasses against UV rays. They also protect you from annoying glare from horizontal surfaces. Polarized lenses are also particularly recommended for fishing enthusiasts, as they allow to see beyond the surface of the water, as well as for winter sports enthusiasts, since they greatly reduce glare from snow and ice.

Photochromic Lenses

Photochromic lenses, such as Transitions, darken in the presence of UV rays, but remain clear inside. Some photochromic lenses can even be darkened by visible light!


By having your eye exam and purchasing your eyeglasses or contact lenses at the same clinic you benefit from our full professional service.