8 doctors weighed in:

I have a 7 week old baby, one of his pupils is bigger than the other is there a reason for this?

8 doctors weighed in
Dr. Robert Chang
Ophthalmology
4 doctors agree

In brief: Have it checked

Could be physiologic anisocoria (born that way), but should also have other medical conditions ruled out and the pupil formally measured to quantify size difference and to check reactivity in light and dark.

In brief: Have it checked

Could be physiologic anisocoria (born that way), but should also have other medical conditions ruled out and the pupil formally measured to quantify size difference and to check reactivity in light and dark.
Dr. Robert Chang
Dr. Robert Chang
Thank
Dr. G. Seth Ford
Ophthalmology

In brief: YES,

You need to see a local ophthalmologist (not to be confused with an optometrist) as soon as possible.
Although this could be a benign incidental finding, other more worrisome diagnoses are a concern. Although not warranting an emergent trip to the er, your child needs to be evaluated as soon as possible.

In brief: YES,

You need to see a local ophthalmologist (not to be confused with an optometrist) as soon as possible.
Although this could be a benign incidental finding, other more worrisome diagnoses are a concern. Although not warranting an emergent trip to the er, your child needs to be evaluated as soon as possible.
Dr. G. Seth Ford
Dr. G. Seth Ford
Thank
Dr. U Krishnan
Ophthalmology

In brief: Get evaluated

There are a number of possible causes for this.
Some are harmless, but some are more concerning. You should see a pediatric ophthalmologist to get evaluated.

In brief: Get evaluated

There are a number of possible causes for this.
Some are harmless, but some are more concerning. You should see a pediatric ophthalmologist to get evaluated.
Dr. U Krishnan
Dr. U Krishnan
Thank
Dr. Timothy Ashley
Internal Medicine & Pediatrics

In brief: Could be serious

In small babies, asymmetric pupils should raise concern.
If any other symptoms are present, esp neuro symptoms like sleepiness, acute onset, or with fever, urgent evaluation would be recommended. If present since birth in an otherwise apparently normal child, still would warrant evaluation by the pediatrician for underlying disorder; there are too many to detail in this space, of varying severity.

In brief: Could be serious

In small babies, asymmetric pupils should raise concern.
If any other symptoms are present, esp neuro symptoms like sleepiness, acute onset, or with fever, urgent evaluation would be recommended. If present since birth in an otherwise apparently normal child, still would warrant evaluation by the pediatrician for underlying disorder; there are too many to detail in this space, of varying severity.
Dr. Timothy Ashley
Dr. Timothy Ashley
Thank
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