What Causes Pink Eye?
Small pupil can be because he associated inflammation.
Detailed Answer:
Hello
Welcome to Health care Magic.
I am Dr. Dadapeer K, an ophthalmologist and I will be answering your question.
I reviewed your history.
It seems from the history that your husband is having pink eye and pupil in that eye is smaller than the fellow eye.
Pink eye is infection of the eye in the form of conjunctivitis and requires treatment by the use of antibiotic eye drops.
The smaller pupil in that eye can be because of associated inflammation of cornea or uvea in the form of keratoconjunctivitis or keratouveitis. Since vision and eye pressure is normal no need to worry this will become normal with treatment of inflammation associated with pink eye.
I usually treat this condition with topical anti-inflammatory drugs like Nepafenac eye drops along with antibiotic eye drops.
The other rare possibilities that need to be considered are Horners syndrome, here there will be small pupil associated with drooping of the eye lid, decreased or absence of sweating on the face...
In your husband's case it is appearing probably because of inflammation as I have mentioned above and no need to be worried as it will resolve.
Do consult your eye specialist for examination to confirm the diagnosis and treatment accordingly.
Hope this is helpful to you.
Do write back to me for further questions.
Thank you
With regards