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Unequal pupils: Understanding the eye's aperture.
Rachael C Heath Jeffery1, Braden Young2, Peter G Swann3
1MChD, BAppSci (Hons), Australian National University, Medical School, Canberra; Department of Ophthalmology, Canberra Hospital, Canberra. rachael.heathjeffery@act.gov.au.
Australian Journal of General Practice
|July 1, 2019
Summary
Unequal pupils, or anisocoria, can signal serious health issues. This review guides clinicians in examining pupils to differentiate benign causes from potentially dangerous underlying conditions.
Area of Science:
- Ophthalmology
- Neurology
Background:
- Anisocoria, or unequal pupils, can be physiological, pathological, or pharmacological.
- It may indicate serious underlying diseases affecting the eye, orbit, brain, neck, or chest.
Purpose of the Study:
- To provide clinicians with a structured approach to pupil examination.
- To build confidence in assessing patients presenting with anisocoria.
Main Methods:
- Review of the anatomy of the pupillary pathway.
- Structured approach to clinical examination of the pupils.
Main Results:
- Discussion of differential diagnoses for anisocoria (large vs. small pupil).
- Explanation of afferent pupillary defects.
Conclusions:
- Accurate pupil testing and observation are crucial for identifying serious pathology.
- This review aims to equip clinicians to confidently manage anisocoria cases.