Pimax eye calibration tool. optometrist tests. 1 eyetracking to get side to side and vertical. Will get you close. Then a fine tune test.
I made a free tool to measure and fix Pimax IPD/vertical offsets – looking for testers (eye strain after VR) Made with AI
I've had eye strain on Pimax headsets for a long time 5k+ that need a large vertical offset. 8kX which i could never get right. And now the dream air.
While my eyes are still strained from prolongued testing these values brought down the eyestrain period after using the HMD drasticly. For the first time i have hope so i decided to share it so others may test. I have an issue where one eye looks down and the other up aswell and a condition that makes one of my eyes have longer vertical image which makes me a tricky case but every other HMD ive tried on this planet somehow gets this right.
What it's based on
Step 1 – Eye test (only for headsets with eye tracking). This is the cover test that optometrists use, automated with the headset's eye tracker. One eye is blanked at a time while you look at a small cross. An eye that can't see drifts to where it naturally rests, and the eye tracker measures that drift. It gives an approximate idea of where your eyes sit sideways. Eye trackers are only accurate to about half a degree, so it's a rough starting point. The main thing is that it will tell you to which side you need to be.
Step 2 – Line test (any Pimax headset). This uses the nonius / fixation-disparity principle behind the Mallett test that optometrists use for eye-strain complaints. Both eyes see a shared square, which keeps them working together, and each eye also sees its own short lines. If the lines don't meet, that's the misalignment your eyes are not managing to compensate, which is the part linked to strain. People can line these up to within a few arcminutes, about 10× finer than the eye tracker.
So step 1 gets you roughly there, and step 2 fine-tunes it.
- Use rested eyes, not right after a long session.
- Keep sessions to a few minutes. Your eyes adapt quickly, so longer isn't more accurate.
- Your original Pimax values are backed up automatically on first run, and one click restores them.
- Do not use the pimax play sliders after calibration.
- Tests are set to 1.3m convergence.
Download
UPDATED DUE TO MINOR BUG. Test 1 should be fully automatic. Not ask you to move. Update access to anyone with link. was restriced by default. Whats the point of sharing defualt restricted google?
Fixed up down being reversed
https://drive.google.com/file/d/1McimW-ZIZK_fsM5Bwz5lO6_4gYgJm1p8/view?usp=drive_link
| Letters | Numpad | Does |
|---|---|---|
| A / D | 4 / 6 | both eyes sideways |
| Q / E | 7 / 9 | left eye sideways |
| Z / C | 1 / 3 | right eye sideways |
| W / X | 8 / 2 | right eye height |
The letters follow the numpad's layout on the ke
How to use it
Before you start: Pimax Play running, headset connected, no game running, Num Lock ON.
Test 1 Eyetracking test. (skip it if you have no eye tracking)
- Turn eye tracking ON in Pimax Play. Calibrate it first
- Look at the green cross and keep your head still for about 55 s. This will give you a rought estimate of your values and show you aprox which side your eyes are. For example mine are horizontal -0.40 left and +0.38 right with -0.16 right vertical.
Test 2 Mallet test.
- First line up the vertical lines
- Second line up the horizontal lines.
- Goal. Se a line up cross.4. Sideways – top line not straight above the bottom line: - Num 4 / Num 6 = both eyes - Num 7 / Num 9 = left eye only - Num 1 / Num 3 = right eye only 5. Height – left line not level with the right line: Num 8 / Num 2 = right eye up/down. 6. If a key makes it worse, press the opposite key. Caps Lock ON = small steps for the final touch. H hides the text.
Undo: 3_Restore_My_Original_Settings.bat, or set the values back by hand in Pimax Play → Optics.
**After a VR session:**
take the headset off and notice what your eyes do.
-
**Nothing happens:**
good setting.
-
**Eyes pull inward:**
set too narrow.
-
**Eyes pull outward:**
set too wide.
Please report back
- Headset model, with or without eye tracking
- Values before and after (shown in the headset)
- How your eyes felt after VR, before and after (strain, how long it took to settle)
Tested on the Dream Air only so far, so results from Crystal, 8KX and Super owners would be especially useful. Unofficial and not affiliated with Pimax.
And lastly. I have some nice words for Pimax that i wont say loud.