How to Examine Normal Pupils
In dark or dim light, the pupil dilates to allow more light into the eye to improve vision. Normal pupil size tends to range between 2.0 and 5.0 millimeters, depending on the lighting. The younger you are, the larger your pupils tend to be.
This video in 30 seconds
This video covers examination of normal pupils. It explains that in dark or dim light the pupil dilates to allow more light into the eye, that normal pupil size tends to range between 2.0 and 5.0 millimeters depending on lighting, and that younger people tend to have larger pupils.
Key points
- The pupil dilates in dark or dim light to allow more light in
- Normal pupil size is given as 2.0 to 5.0 millimeters depending on lighting
- Younger people tend to have larger pupils
Video Overview
This video presents “How to Examine Normal Pupils” — In dark or dim light, the pupil dilates to allow more light into the eye to improve vision. Normal pupil size tends to range between 2.0 and 5.0 millimeters, depending on the lighting. The younger you are, the larger your pupils tend to be. Whether you are preparing for a procedure, studying the technique, or learning how a condition is assessed, the recording shows the process as it is performed in practice.
From our Ophthalmology collection: Eye examinations, cataract and LASIK surgery, retina procedures and common eye conditions explained by specialists. Browse all Ophthalmology videos →
Educational content only — not a substitute for professional medical advice.
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