Capturing Eye Images
2. Capturing Eye Images
Last Updated: March 24, 20262.1 The Capture Workflow PupilMetrics always captures **right eye first (OD)**, then **left eye (OS)**. This convention matches standard clinical iridology notation. Both images must be captured before analysis can run. The Camera Mode Selector screen lets you choose the capture method independently for each eye, though in practice the same source is used for...
2.1 Camera Source Selection
Last Updated: March 24, 2026Tap the eye card on the Camera Mode Selector to open the source picker. The following sources are available: | Mode | Best For | |——|———-| | Quality-Gated Rear Camera | Phone/tablet — automatic sharpness & exposure gate | | Quality-Gated Front Camera | Selfie capture on mobile | | Manual Camera | Direct camera...
2.2 Quality-Gated Camera Mode – Android App
Last Updated: March 24, 2026| **Brightness** | 30 – 230 (0–255 scale) | Under- and over-exposure | | **Contrast** | Score ≥ 30 | Flat, low-detail images | | **Pupil confidence** | ≥ 30% | Frame contains a detectable pupil | | **Centre offset** | ≤ 25% of frame | Pupil not centered enough | **Status indicators** – 🔴...
2.3 Manual Camera Mode – Android
Last Updated: March 24, 2026Manual mode gives direct access to the camera shutter without the quality gate. Use this when: – You want full control over the exact moment of capture. – You are using a third-party macro lens attachment. – The quality gate is rejecting good images due to non-standard lighting. Tap the shutter button to capture. The...
2.4 USB / UVC Iriscope (Dino-Lite)
Last Updated: March 24, 2026PupilMetrics has deep integration with the Dino-Lite AM4115ZT and compatible iriscope models. Windows (Dino-Lite via DNVideoX) Prerequisites How it worksPupilMetrics launches a lightweight background bridge process (dinolite_bridge.exe) that communicates with the iriscope via the DNVideoX COM interface. The live preview is displayed in the app. Capturing LED controlThe iriscope LED ring can be toggled and...
2.5 PLR Video Mode – Android
Last Updated: March 24, 2026PLR (Pupillary Light Reflex) video mode records the pupil’s response to a light stimulus, allowing measurement of constriction speed and amplitude over time. **When to use** Use PLR mode when you need to assess neurological pupil response, not just static iris morphology. **How to capture** 1. Select **PLR Video** from the Camera Mode Selector. 2....
2.6 Import from Gallery
Last Updated: March 24, 2026Use **Import from Gallery** to load previously saved iris photos for analysis. This is useful for: – Re-analysing archived patient images. – Comparing results across sessions using the same raw photo. – Testing with reference images. **Both eyes at once** A single gallery action prompts for the right eye image, then the left eye image...
2.7 Tips for a Good Capture
Last Updated: March 24, 2026Regardless of capture mode, the following practices produce the best analysis results: **Lighting** – Use diffuse, even illumination — the built-in iriscope LED ring is ideal. – Avoid harsh shadows across the iris. – Avoid reflections from overhead lights on the cornea; slight repositioning eliminates most reflections. **Distance & framing** – The iris should fill...
