New Line of No-Line Bifocals
Progress lenses are increasingly popular and are the most widely purchased lenses to correct the loss of near vision with age.
If you're a maturing adult who has trouble reading fine print, Progressive Lenses are the new "no-line" bifocals that eliminate the lines of bifocal or trifocal lenses and look just like single visions lenses.
Anyone on TV or whose photo is taken often benefits tremendously from the coating, but really, all eyeglass wearers would benefit from an anti-reflective coating from a cosmetic point of view. If you have a strong prescription, you can use the AR coating in conjunction with high-index lenses to make your glasses look and feel as thin as possible.
The Big Difference
Progressives vs. Bifocals and Trifocals
Progressive Lenses have a seamless progression from distance to near with an intermediate section in between that creates a more natural correction of presbyopia than bifocals or trifocals. Because of this wide range of focal points, progressive lenses are considered to be "multifocals" that can be used to satisfy almost any visual need.
The upper portion of the lenses allow you to see short to long distances either while driving or simply looking across the room. Looking directly forward in the center of the lens you are able to clearly see faces and objects in a close radius. And fine print becomes easily legible, if you drop your gaze downward through the bottom portion of the lens.
In order to ensure the that all lens properties are accessible easily and comfortably, measurements are taken to determine where the focal corridor that runs vertically down the middle of the lens should be placed.
Progressive Lenses are designed to prevent "image jump" which is common with bifocal and trifocal lenses. The central corridor's alignment is designed to create a smooth, comfortable transition as opposed to the drastic change in focal power which causes images to appear to jump as you move from distance to near.
Adjusting to Progressive
We have highlighted several keep reasons for adapting and adjusting to progressive lenses.
Most adaptation problems to progressive lenses are caused by one of the following:
- Inaccurate placement of the optical center of the lens-the segment/fitting height should be placed at the same spot as the patient's previous progressive lenses or for new wearers it should be exactly in the center of the pupil.
- The wrong type of progressive lens design.
- Patient not understanding how to use the progressive lens and/or not allowing enough time for adaptation.
- Frame adjustments are not correct for the individual or are different from previous glasses.
To adjust quickly to your new Progressive Lenses:
- Stop wearing your old glasses completely.
- Wear your new glasses high on the bridge of your nose and as close to your face as possible.
- To look at an object, turn your head and look directly toward it (do not just turn your eyes). Then simply raise or lower your chin until the object comes into focus.
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