Computer-vision progressive lenses

Range of glasses from near to far Computer-vision progressive lenses The optical power to correct presbyopia increases gradually from the upper to the lower part of the lens. Myopia and hyperopia are also corrected. When the eyes view through the progressive zones, clear vision is possible in the range from a few meters to near vision with slight lateral limitations. Presbyopia with an average long-sightedness or advanced presbyopia can have clear vision, depending on the glass manufacturer and type, up to a maximum of four meters.

Advantages:

There are no borders between optical powers (as in trifocals), thus the required amount of near vision optical power (from a few meters up to near vision) can be used by appropriate adjustments of gaze direction relative to the lens. Due to the wider progressive zone than in general purpose progressives, the computer- vision progressives are preferred by most users because of better vision at the monitor and lower musculoskeletal complaints. Conventional monitor positions can be used without inclining the head.

Disadvantages:

Vision is blurred in far vision, since the upper part of the lens includes the optical power of a few meters only. Thus, car driving is not allowed with these computer-vision progressive lenses.

A screen – focus lens has a little towards the edge right and left ” blur areas ” . When looking into the distance – drive especially while driving – should be discontinued the screen bifocals because one sees blurred otherwise . Is a spectacle correction required for distance vision , here the settling of the spectacles is not sufficient , but a change to the distance glasses is required. (see THIRD STEP).

Typical applications

  • If you are presbyopic and have to mostly look at the monitor and rarely read documentation or look into the distance (for this issue take off the glasses or if you have a refractive error you need to change for distance glasses).
  • For low presbyopia, who have to work many hours in front of the monitor and notice vision complaints when reading documents.

Recommended monitor position for computer-vision progressive lenses »

Print Print
Ergonomic Vision IfADo © 2012 - 2017 Copyright