Answers are grounded in this paper and cite their sources.
Broca's pupillometer measures pupil diameter, highlighting measurements errors due to optical issues.
Broca's pupillometer offers a simple and effective means of measuring the diameter of the pupil. However, it is often used without proper attention to the limitations of its optics. Errors of measurement may result from uncorrected refractive error, accommodation, spectacle correction, and spherical aberration (SA). A simple means of minimizing these errors is to hold the pinholes (PH's) of the pupillometer as close to the cornea as is feasible.
No takes yet. Share an insight, caveat, or question.
Roger W. West (1988) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: