PD Calculator

Multi-Pair Iris Geometry — v4

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Step 01 — Calibration

Select Your Height

Height helps refine arm-length estimation for distance calibration.

Step 02 — Anchor
Extend Arm Fully
Hold phone at max arm length. Look straight ahead, head level. Tap Lock Anchor when ready.
—cm away
Detecting…
⏳ Detecting face…
Position face in oval — extend arm fully
Step 03 — Scan
Slowly Move Closer
Move phone slowly toward your face over ~10 cm. Each position auto-captures a pair. Keep eyes forward.
🔒 Anchor: — cm
—cm away
Pairs0
closer
0%
⏳ Detecting face…
PAIRS
0/5
✓ Measurement Complete
Binocular PD
—mm
—
Left PD
—
Right PD
Per-Pair Estimates
Summary
Pairs used—
Anchor distance—
Dist range scanned—
PD std dev (σ)—
Height profile—
ℹ️ Normal adult PD range: 54–74 mm. For prescription use, verify with an optician.
🔬
Analyzing Pairs

Computing PD…

Processing