Spectacles for Presbyopia
If you have perfect unaided distance vision or perfect corrected distance vision, when you reach about the age forty years, you will very likely lost some degrees of eyes ability to focus on near object clearly and comfortably, this condition is called Presbyopia.
Single vision spectacles prescribed for only reading purposes can solve this problem. However, for many others this reading only spectacle, which cannot be used for seeing distance and walking around in the office or at home, is very inconvenience for regular uses.
Bifocal spectacles have distinctive line dividing the upper segment for distance purposes and the lower segment for near visual tasks.
Progressive power spectacles provide undisrupted clear vision at all distances
Progressive power lenses are designed so that a smooth, continuous and seamless progression of lens power changes vertically, from upper distance portion down to the lower intermediate and close up portion, providing undisrupted clear vision at all distances, and eliminated all the main disadvantages of bifocals.
The multi-function progressive power spectacles are the most commonly used by Presbyopes, whether for occasional or as constant visual needs.
Majority of first time progressive power spectacle wearers take just a week or so to get use to the mild peripheral blurriness and swing or floating feeling with the standard progressive power lenses made by the well established manufacturers.
For some others requiring higher performance progressive power spectacles and those previously failed to adapt to the standard progressive power wearers, the advanced digital wave-front technology produced premium progressive power lenses, offer a wider field of vision, minimised unpleasant swim and sway effects, allowing for natural head posture and comfort.
It is much easier and need shorter time to adapt to the progressive power spectacles for younger middle age due to the built-in mild reading-addition power, and this also pave a comfortable route for the progressively stronger built-in reading-addition powers as age advancing. However, optimum functions of progressive power spectacles required the optometrists to have years of clinical skills and experiences in prescribing and fitting of this multi-task vision correction.