Does anyone have tadpole pupil and know why it happened?

[artsera]

I am a survivor of four brain surgeries.Three craniotomies for anuerysms and a ventricular shunt placement for hydrocephalus. My last surgery was 10 years ago.Recenty I lost my hearing in the right ear and have developed tadpole pupil. The hearing has been explained by inner ear fluid which periodically gives me violent vertigo and nausea. One day I looked in the mirror and my pupil had moved to the edge of my iris. Being that I have diplopia I thought I was seeing wrong. I started having wash outs with my vision and discovered both eyes are now doing this new rotation. I have not been able to get a clear anawer about this new developemnt. Anyone know anything?

[Eyedoc770]

tadpole pupil is in itself a benign condition but can be disconcerting for the patient as it makes your eye look like a cat's eye.  The iris has two muscle groups in it, one to make the pupil bigger and the other to make the pupil smaller. The one that makes the pupil bigger runs radially at 90° from the edge of the pupil.  These muscle fibres usually all shorten at the same time pulling the edge of the pupil outwards and making pupil bigger, if just one little section pulls and the rest don't this distorts the edge of the pupil just in one section and gives you a round people with a little tail, shaped a bit like a capital Q or tadpole. The complex neurological "wiring" error that leads to the situation is not well understood but is probably something to do with damage to the sympathetic nervous system. The wiring for the sympathetic system, anatomically, does pass through or come close to some of the areas where you have had problems, though the wiring also takes a very convoluted route going through the top of the lung and up through the arteries of the neck! It is very unusual to have this abnormality on both sides, this makes you unusual and the reason you're not getting a clear answer is most probably because the doctors who are treating you are not entirely sure why this is happening either. The "washouts" of your vision, if they're happening to both sides at the same time, sound to be related to fluctuations in blood supply to the brain and/or eyes.