occaisonal vertical diplopia?

for the past 2 years or so, I get double vision sometimes.   I only ever notice it if i am looking at someones face, most commonly people look like they have two vertical sets of eyes, and two vertical mouths. This more usually happens if someone is a few feet or more away from me. It also seems to go away if i tilt my head, i haven't tried covering one eye yet. now, one reason i didnt quite take this seriously, is that I first noticed this vertical diplomia when i had ingested magic mushrooms (for educational reasons, ive done this twice, i generally dont even take aspirin without a good reason). but it''s been two years since then, and i still get it. I wasnt too concerned until i looked it up just now on the internet, and now im a little worried. BUt then again, i also spend a LOT of time staring at computer screens, so it could just be eye fatigue, no?

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

Since this is new its very important to have it evaluated very soon by an Eye MD ophthalmologist, ideally by a strabismus (eye muscle) specialist. Find one near you at www.aao.org  

Your description is compatible with a fourth (trochlear) extraocular muscle paresis. A work up needs to be done to find the cause.

JCH MD