Clinical Research And EvidenceFinding

Neural pupil index as a proprietary metric criticized in pupillometry research

April 4, 2026π™Ÿπ™€π™¨π™ 𝙛𝙖𝙧𝙠𝙖𝙨

Josh Farkas argues pupillometry studies reporting only the neural pupil index are scientifically weak because the metric is proprietary and computed via a secret formula from a single vendor.

Research on pupillometry that only reports the neural pupil index (NPi) is worthless
NPi is *proprietary* & calculated with a *secret* formula by *one* company's product.
Does this seem like ideal scientific practice?
π™Ÿπ™€π™¨π™ 𝙛𝙖𝙧𝙠𝙖𝙨
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