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Ask Dr. Su S. Your Own Question
Dr. Su S.
Dr. Su S., Pediatrician
Category: Pediatrics
Satisfied Customers: 20908
Experience:  20 years of experience in treating children.
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My son is 3 1/2. His eyes seem not to dilate correctly. When

Customer Question

My son is 3 1/2. His eyes seem not to dilate correctly. When we are in bright light, the pupils stay large. So I had him look directly into the bright bathroom lights and his pupils dilated only slightly, and/or would flicker a bit in and out. Any ideas?
Submitted: 1 year ago.
Category: Pediatrics
Customer: replied 1 year ago.
I take that back, when he would look into bright light, they would dilate to small pupils, but very quickly back to large, and then in and out quickly even though the bright light was still present
Expert:  Dr. Su S. replied 1 year ago.
Thank you for your question.
I am Dr. Su S. and I will try my best to help you.
Since when are you noticing it?
Does he have any other symptom?
Are the pupils of both sides equal?
Customer: replied 1 year ago.
I just noticed it. If you notice my last question, he does say that he is tired up to 30+ times a day, so I had his blood tested. I don't know if these two correlate. I'd have to check again, but I think both sides are the same.
Expert:  Dr. Su S. replied 1 year ago.
Please check again.
Customer: replied 1 year ago.
He wont be here for 5 days. Can you give me any ideas as to what is happening? Thank you
Expert:  Dr. Su S. replied 1 year ago.
Thank you for the input.
Small difference of pupil size can be normal.
One may appear more dilated.
If both are dilated equally & do not come back to normal size there can be brain, blood vessel or nerve issue.
In 20% of people it is found that pupils are unequal.
Sometimes, it can be hereditary.
Again, pupils may differ in size temporarily without any underlying cause.
If it persists then an examination by an ophthalmologist should be taken.
I hope this information will be helpful.
If you have any query, please feel free to ask.
If you are happy with my answer please click on the Excellent/Good rating.
Wish his healthy life.