Establishing Normative Data for Pupillometer Assessments in Neuro-Intensive Care

The purpose of this study is to collect a large amount of data that may assist in addressing the gap in knowledge of understanding pupillometer readings using a pupillometer device. The aim of this project is to establish normative values for pupillometer data. Measures of central tendency will be developed for the variables provided by automated pupillary exams, which will provide an enhanced understanding of clinically appropriate pupil values for size, reactivity, and neurological pupil index.

Inclusion Criteria: * Data will be collected on patients admitted to enrolling hospitals who have been assigned, by the attending physician, to have regular pupillary assessments, and in whom staff nurses are performing pupillary assessments with the pupillometer. Exclusion Criteria: * Out-patients * Patients that do not have orders for regular pupillary assessments