Use of a smartphone camera to assess pupil response to light in neurocritical care – comparison with pen torch

Smartphone Pupillometry in Neurocritical Care - Comparison against PenTorch: the SPIN_CAT trial

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN53630869

Enrollment

Registered

2023-04-20

Start date

2023-04-01

Completion date

Unknown

Last updated

2023-05-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Critically ill patients admitted to neurocritical care Not Applicable

Interventions

Patients will have pupillary assessments made by pentorch and smartphone pupillometry. Pentorch is routine and the smartphone application is the additional intervention. Each intervention will be perf

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Any patient admitted to neurocritical care

Exclusion criteria

Exclusion criteria: Pupillary assessment not possible due to ocular pathology

Design outcomes

Primary

Measure	Time frame
Pupil diameter (millimetres) and pupil reactivity (binary – responsive or non-responsive) measured using the two modalities (pentorch and Solvemed smartphone application), performed hourly during the day shift, for a maximum of 10 days per patient	—

Secondary

Measure	Time frame
There are no secondary outcome measures	—

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026