Bif Invisi

Bif Invisi

Those around the age of 40 often face a common problem in focusing on near objects and thus at times needs to stretch their arms to clearing see the near objects.

Common Problem Arise After 40

Those around the age of 40 often face a common problem in focusing on near objects and thus at times needs to stretch their arms to clearing see the near objects.

Understanding Presbyopia

The common problem of focusing on near objects without near correction around the age of 40 years stems from the fact that the lens inside the eye begins to harden and lose its elasticity (flexing ability) and it can no longer accommodate like it used to which causes blurriness of near objects in sight.

Introducing

Invi………………

The next generation invisible biofocal made with digital technology

Design details

The new Digital Round –seg is compensated, made to Focus with Two Different Viewing areas. The Top Of the lens is for Distance Vision and the Curved segment at the bottom is for reading.

It offers wide fields of Clear Vision for both Distances. Because there si no Power Progressions a sudden jump between the two optical Zones will be Noticed.

There are No Lateral lobes of unwanted astigmatism because of not having power progressions this provides wearers with comfortable vision and no distortion or swim effect.

Advantages:-

  • High Quality For Distance And Near Vision
  • Wide Distance and Near Visual Fields.
  • Clear vision in every gaze Direction no oblique astigmatism.
  • Frame shape Personalization available.
Lens details Reading glass (single vision) Conventional round top bifocal Conventional

Flat top  bifocal

Conventional e-line bifocal Noline
Visual zone Near Distance and near Distance and near Distance and near Distance and near
Wearing purpose Only for reading Constant wear Constant wear Constant wear Constant wear
Dividing line Absent Visible Strongly visible Very strongly visible Invisible
Aesthetics Moderate Average Not good  Good
Wearing position On tip of the nose Normal position Normal position Normal position Normal position
Adaptation Fast Slow Medium Slow Medium
Image jump No Yes Yes Yes Negligible
Optical center  4mm above Segment  3mm above Segment On Segment 4mm above segment
Segment 28MM 28/35MM Half of the frame 28/32/40MM
Thickness                    (depends on rx/add) Yes Yes Yes Yes No
Thickness balancing distance and near    (depends on rx) Not possible Not possible Not possible Possible
Base curve (flexibility) No No No No Yes
Index / material   (flexibility) No No No No Yes
Min add 1.00 DS 1.00 DS 1.00 DS 0.75 DS
Max add  3.00 DS  3.00 DS  3.00 DS 4 .00 DS
Reading Comfort Comfortable Medium  Comfortable Average  Comfortable
Overall Comfort Need to be remove frequently Medium Comfortable Average Comfortable
b1 b1 b1
Digital Invisible Bifocal – 28mm Digital Invisible Bifocal – 32mm Digital Invisible Bifocal – 40mm
  • For Small Stylish Frames.
  • Best Choice for Round Top & Small Size Flat Top Wearers.
  • For Mid Size Stylish Frames.
  • Best Choice for Mid Size Flat Top Wearers.
  • For Bigger Stylish Frames.
  • Best Choice for E-Line Wearers & Mid Size Flat Top Wearers.