The first time you put on progressive glasses, the center of the lens looks sharp and the floor appears flat, but any quick glance to the side smears the world into a soft streak....
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The OptoTech SD progressive lens design spreads the unwanted astigmatism across larger areas of the lens surface, thereby reducing the overall magnitude of blur at the expense of narrowing the zones of perfectly clear vision. The astigmatic error may even affect the distance zone. Consequently, softer progressive lenses generally show the following characteristics: Narrower distance zones, wider near zones, and lower, more slowly increasing levels of astigmatism (widely spaced contours). The max. amount of unwanted astigmatism is reduced to an incredible level of approx. 75% of the addition power.This design variant is partly applicable for modern working places.
The first time you put on progressive glasses, the center of the lens looks sharp and the floor appears flat, but any quick glance to the side smears the world into a soft streak....
READ MOREWho Should Wear Progressive Lenses: The Short Answer Progressive lenses belong on the face of anyone who needs three working distances in one frame and is willing to give the desi...
READ MOREA 63-year-old machinist picks up his first pair of progressive lenses. Two weeks later he comes back with a strange complaint: straight ahead, everything is crisp, but every time ...
READ MOREA woman in her late forties holds a restaurant menu at arm's length, gives up, and asks the person across the table to read it aloud. Three months later she is sitting in a fittin...
READ MOREA 52-year-old office manager reads a spreadsheet on her monitor, glances at the printed invoice in her hand, then looks across the room at a colleague walking in. Three distances,...
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