anisocoria

I first noticed the anisocoria a couple of years ago, but I have noticed it more lately.  My right eye is always bigger.  Sometimes I can hardly tell the difference, but other times it is very obvious, especially in the morning ( about 2mm).  What is the most likely cause of this.

[John C Hagan III, MD, FACS, FAAO]

The most common cause would be "physiologic aneisocoria"  (like having feet of two different sizes).

JCH MD

[munthek]

I too have a pupil that is bigger than the other.  Sometimes they switch sides and it really freaks me out.  The eye doc said it was physiological and I certainly hope so.  He never put any dilating drops in the eyes, so how does he know it isn't Horners?  This started about three months ago for no apparent reason and it really scares me.  Everytime I get a headache I think I'm going to die........and I'm only 34.

[John C Hagan III, MD, FACS, FAAO]

If its Horner's on the side with the smaller pupil the lid should droop slightly (ptosis). I would suggest seeing a neuroophthalmologist. Find one near you at www.aao.org

When you go in take some good full fact pictures of yourself taken 5-7 years ago.

JCH MD

[munthek]

I can't find any neuro opthalmologists in my state (WI).  Do you suppose the Mayo Clinic has one?  or should I trust an opthalmogist enough to know if it was something abnormal to refer me to nuero?

[John C Hagan III, MD, FACS, FAAO]

You're not looking very hard. they're are neuro-ophthalmologists at the U of Wisconsin in Madison and at the Medical College of Wisconsin-Milwaukee County Hosptial in Milwaukee plus others in private practice.

JCH MD

[soylent1139]

Is it possible to have Horners without the droopy eyelid??