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Confirmation Test in Optovera

Procedure to validate an altered pupillary response result.

Sometimes, the Optovera test may show an altered or high-risk result. Since the Pupillary Light Reflex (PLR) can be temporarily affected by momentary factors, a confirmation test is recommended.

What is the confirmation test?

The confirmation test is a second PLR measurement performed after a 5–10 minute pause. Its purpose is to verify whether the initial alteration:

  • Persists → confirms that the impairment condition continues.

  • Disappears → suggests the initial result was a temporary fluctuation with no clinical significance.

Temporary factors that may affect the PLR

Before repeating the test, it’s important to consider temporary conditions that may alter pupillary response:

  • Recent physical activity (climbing stairs, brisk walking, exertion).

  • Environmental temperature (heat or cold can affect the autonomic nervous system).

  • Sudden light changes (moving from bright to dark areas).

  • Stress or hurry (emotional tension can influence nervous system response).

Procedure for HSE supervisors

  1. Stop operations after a high-risk or altered result.

  2. Allow the worker to rest for 5–10 minutes before repeating the test.

  3. Check external conditions: light, temperature, recent exertion, stress.

  4. Repeat the test with correct technique (visor aligned, eyes open, fixed gaze).

  5. Interpret the result:

    • If second test is “Low Risk” → initial alteration was not significant.

    • If second test confirms “High Risk” → condition is real and must be managed before critical tasks.

Role of AI in measurement precision

Optovera’s system uses machine learning algorithms that:

  • Continuously update the worker’s individual baseline.

  • Differentiate between normal fluctuations and actual abrupt changes.

  • Track natural evolution (age, physiology) without losing sensitivity to real impairment.

Conclusion

The confirmation test is a critical step in Optovera’s process. To be valid, it must be repeated after at least 5–10 minutes, ensuring recovery from temporary factors. If impairment persists, it is confirmed high risk and must be managed according to HSE protocols.