Modifying RangeVideo goggle interpapillary distance

The rangevideo goggle 's design has an interpupillary distance of 6.2cm (define as the distance between the center of 2 pupils , at a distance > 1m ). This is the state that the eye will focus at distant object with the abducent muscle at a relative relaxing state (in contrast to near object viewing). I measure my own IPD (taking a self portrait with a ruler over my eyes) and is measured as 6.6-6.7cm . Do not ignore the small difference of 5mm as this will cause lots of eye strain on prolong use.
In addition, one may find the images of the 4 corners of each LCD are not sharp simultaneously (check it by looking at each corner with one eye closed) as light do not enter each eye correctly if the IPD is not correct.
So I modify my goggle....

Unscrew the 4 screws in the corners. They are concealed by silicon plug. Remove with toothpick. Price open using tongue depressor. Take great care of the anti-glare plates.

The lens module. Unhook the wires to the circuit board. The lens are nicely designed and is dust resistant.

Unhook the wires.
Cut the central lens mount. The circuit board can be put back in place and adjust the IPD. Hot glue whatsoever you want. Small amount of plastic at the bottom corner needed to be trimmed when placing back the module into the goggle case. The maximum IPD size can be adjusted is around 70mm. I set mine to 67mm.

Looks nice !!
The 4 mm adjustment makes viewing much more comfortable without eye straining. Since I wear corrective glasses and I find the adjustment makes image on all 4 corners same and clear on both eyes.