Pupil Size Chart

The chart shows the normal pupil size in light and dark conditions for different age groups, ranging from newborns to individuals aged 70 years and above.
Age Group Normal Pupil Size in Light (mm) Normal Pupil Size in Dark (mm)
Newborns 2-4 4-5
1-3 years 2-4 4-6
4-8 years 3-5 4-7
9-13 years 3.5-5.5 4.5-7.5
14-19 years 4-5.5 4.5-8
20-29 years 4.5-5.5 5-8.5
30-39 years 4.5-5 5-8
40-49 years 4-5 4.5-7.5
50-59 years 3.5-5 4-7
60-69 years 3-4.5 3.5-6.5
70 years and above 2.5-4 3-6

The Pupil Size Chart provides information on the normal range of pupil sizes in both light and dark conditions for different age groups. Pupil size can vary depending on factors such as age, lighting conditions, and overall health. This chart can be used as a reference for assessing whether an individual’s pupil size falls within the normal range for their age group. By understanding the normal range, healthcare professionals can better diagnose and monitor certain eye conditions or neurological disorders.


What is a pupil size chart?

A pupil size chart is a visual representation of the normal range of pupil sizes that can be observed in individuals.

How is a pupil size chart used?

Pupil size charts are used by healthcare professionals, particularly ophthalmologists and neurologists, to assess the health and function of the eyes and the nervous system.

What can the measurement of pupil size indicate?

The measurement of pupil size can provide information about a person's overall health, their visual acuity, and even help diagnose underlying medical conditions or drug/alcohol use.

Are there abnormalities in pupil size that need attention?

Yes, significant asymmetry in pupil size, unequal constriction or dilation, or abnormally constricted or dilated pupils may indicate health issues and should be evaluated by a healthcare professional.

Can pupil size change over time?

Yes, pupil size can change naturally in response to varying lighting conditions or under the influence of certain medications or substances. Monitoring changes in pupil size can be important for identifying potential health concerns.

How we write our statistic reports:

We have not conducted any studies ourselves. Our article provides a summary of all the statistics and studies available at the time of writing. We are solely presenting a summary, not expressing our own opinion. We have collected all statistics within our internal database. In some cases, we use Artificial Intelligence for formulating the statistics. The articles are updated regularly.

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