Flash information
- Document
- Authentic clinical figure
- Focus
- Anisocoria: observing the pupils
- Limitation
- Photographs do not test pupillary light reflexes.
Definition
Unequal pupil diameters.
Examination or reading method
Compare light and darkness, then assess reactivity.
Morphological description
Compare pupils in the central primary-gaze view.
Context and interpretation
The source context is trauma, not proven physiological anisocoria.
Differential diagnoses
Consider physiological, pharmacological and neurological causes.
Associated findings
Assess ptosis, diplopia and neurological deficits.
Red flags
Acute post-traumatic anisocoria warrants urgent assessment.
Pitfalls and limitations
Photographs do not test pupillary light reflexes.
Take-home message
Integrate pupils, chronology and context.
Sources
- Anisocoria without extraocular muscle impairment due to moderate traumatic brain injury with midbrain contusion: a case report ↗
- MSD Manual Professional · Anisocoria ↗
Documentary review: 2026-10-14
Media source & rights
- Author
- Koshi Ota; Hitoshi Kobata; Yoshisuke Hamada; Saki Mizutani; Terunari Okuyama; Kanna Ota; Yuriko Takeda; Akira Takasu
- Original source
- Koshi Ota; Hitoshi Kobata; Yoshisuke Hamada; Saki Mizutani; Terunari Okuyama; Kanna Ota; Yuriko Takeda; Akira Takasu · Anisocoria without extraocular muscle impairment due to moderate traumatic brain injury with midbrain contusion: a case report · CC BY 4.0
- Licence
- CC BY 4.0
- Changes
- Complete original figure retained; WebP conversion and proportional resizing only. No clinical signs added or altered.
- Dimensions
- 1124 × 703 px
- Check
- 2026-10-14