Pupil Assessment Made Easy

Pupil Assessment Made Easy — Size, Reactivity, RAPD • Quick Guide + Calculator

Measure pupil size, check reactivity, and screen for RAPD using the quick calculator below. For more training and local pathways, see EMS Education, Assessment, and Medical Protocols. Educational only; not medical advice.

What to capture

Size (mm)

Measure both pupils in ambient light
Note anisocoria (difference in size)

Pupil assessment basics

Shape & Reactivity

Round vs. irregular/oval
Brisk, sluggish, or non-reactive

When to escalate

RAPD Screen

Swinging-flashlight test
Compare direct vs. consensual response

Pediatric PAT/ABCDE

Pupil & RAPD Quick Calculator

Enter findings

Left pupil size (mm) Ambient light

Right pupil size (mm) Ambient light

Left reactivity

Right reactivity

Pupil shape (L)

Pupil shape (R)

Swinging-flashlight (RAPD)

Summary

Review Protocols

For more training, see EMS Education and the Assessment Library.

Red Flags — Act Now

New anisocoria ≥ 1 mm with ptosis or diplopia
Fixed dilated pupil after head trauma
RAPD with acute vision loss
Bilateral non-reactive pupils with decreased consciousness

If any red flag is present, escalate per medical protocols, and align with pediatric PAT/ABCDE guidance.

Cited Keywords & Referral Links

Each keyword below links within gyathshammha.com (as requested).

Pupil assessment Anisocoria Pupil reactivity RAPD Neuro exam Escalation protocols Pediatric PAT/ABCDE Contact us

Need help or feedback?

Questions about exam steps or protocols? Reach out anytime.

EMS Education Assessment Articles Medical Protocols Contact Us

Bottom line

Measure both pupils, grade reactivity, and screen for RAPD. Watch for red flags and follow your organization’s guidance. If pediatric, align with the PAT/ABCDE approach.

This page is for education and does not replace clinical judgment or local policies.