I. Indication

II. Technique

  1. Check left eye response (direct and consensual)
    1. Shine light on left eye and check left pupil reflex
    2. Shine light on right eye and check left pupil reflex
  2. Check right eye response (direct and consensual)
    1. Shine light on right eye and check right pupil reflex
    2. Shine light on left eye and check right pupil reflex

III. Findings: Normal response

  1. Direct Light Reflex
    1. Pupil constricts to direct light
  2. Consensual Light Reflex
    1. Pupil constricts to light shining on opposite pupil

IV. Findings: Abnormal - Afferent lesion (Retina or Optic Nerve)

  1. Known as Marcus Gunn Pupil
  2. Intact Consensual Light Reflex
  3. Paradoxical Pupil Dilation to direct light
    1. Occurs on moving light from opposite to affected eye

V. Findings: Abnormal - Efferent lesion (CN 3 or pupillary muscle)

  1. Affected eye loses consensual and Direct Light Reflex
  2. Unaffected eye maintains consensual and direct reflex

Images: Related links to external sites (from Google)

Ontology: Pupillary light reflex tests (C0853996)

Concepts Diagnostic Procedure (T060)
Italian Prove del riflesso pupillare alla luce, Prova del riflesso pupillare alla luce
Dutch lichtreflextest pupil, pupil-lichtreflextests
French Tests de réponse pupillaire à la lumière, Tests de réflexe pupillaire à la lumière
Portuguese Provas de reflexo pupilar, Provas de reflexo pupilar à luz
Japanese 瞳孔対光反射試験, ドウコウタイコウハンシャシケン
Czech Testy červeného reflexu
English Light reflex tests pupillary, Pupillary light reflex tests
Hungarian Pupilla fényreflex vizsgálatok, Pupilla fény reflex vizsgálatok
Spanish Pruebas del reflejo pupilar
German Pupillenlichtreflextests