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A corrective lens is a complete system defined by three (3) dimensions :
• The correction (what the lens corrects)
• The materials (what the lens is made of)
• The lens treatments (what protects the material and optimizes its performance)
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Correction: what the lens corrects
Ex: myopia, hyperopia, astigmatism, presbyopia, etc
The lens that corrects myopia, hyperopia and astigmatism is a single vision lens.
Many types of lenses can correct presbyopia. The progressive lens is the one that provides the most natural vision.
Varilux: for complete visual freedom (panoramic fields of vision, fast and easy adaptation guaranteed).
Lens treatments: what protects the material and optimizes its performance ?
Reflection-free - better contrast and better transparency.
Scratch resistant - protects the material against scratches.
Hydrophobic - for easy cleaning.
Crizal is hydrophobic, reflection-free and scratch resistant.
Materials: what the lens is made of
Airwear (new generation polycarbonate) - unparallelled comfort, protection, and aesthetics.
Plastic - lighter weight and more impact resistant than glass but easy to scratch.
Glass - scratch resistant but heavy and not very impact resistant.
