Intermittently for the last couple of days, each of my eyes has been having difficulty "agreeing" on the same thing to focus on. For example, if I hold up a pencil in front of me, one eye will be focused on the pencil, and the other will be focused slightly beyond or in front of it.

The result is that I can't really see for stretches at a time.

My (corrected) vision is otherwise fine; if I cover up one eye, I can see out of the other with no problems.

This new thing is really distressing.

Has this happened to anyone else? Who should I see about it? I'm not even entirely sure what the difference between an ophthalmologist and an optometrist is. But since I have PCS, I am thinking it is more of a brain thing anyways.

I had trouble with binocular vision after my concussion (getting both eyes to work together) though unlike you I didn't perceive that I was having trouble with it until testing showed problems. It definitely aggravated my headaches.

You should have a medical eye exam (which tests acuity, field of vision, etc) and also a Visual Efficiency Evaluation, which checks for how well your eyes work together.

I did ten weeks of vision therapy which helped a lot.

You can find an optometrist that does this type of testing and therapy here: http://www.braininjuries.org/

Good luck!

I have the same issue and going for the vision therapy. Already went for 9 sessions and didn't see much improvement except I feel better immediately afterwards for 3-4 hours and next day all back to crap. Vision therapists I go to are very good. Can't complain.

It is a brain thing. But my brain seems to be rigid and refuses to learn. Also my Nero-Optometrist mentioned there is a chance it can be even before head injury and now it got worse since after TBI it gave up for compensating.

I will be continuing for sure. That is something you definitely can look into and some has good success in eliminating headaches.

An optometrist goes to college for a basic degree, then 4 years of optometry school to become a doctor of optometry, for vision and eye conditions.

An ophthalmologist goes to college for a basic degree, then medical school for an MD, then specializes in conditions and diseases of the eye. Usually this also means they may specialize in certain specialties of eye problems--a glaucoma ophthalmologist, a retina specialist, a pediatric ophthalmologist, etc.

I would say go to an ophthalmologist, and one who specializes in eye movement disorders. Find an ophthalmologic practice with more than one doctor, and ask them to make you an appointment with the doctor who best fits your symptoms (which you of course tell them, at least briefly).

A very good optometrist would also know what is going on with you, but an ophthalmologist would likely be better.

(I have a few different eye problems, and see two ophthalmologists regularly, as well as up to three or four other ones in this practice occasionally/yearly as things act up.)

Your eye muscles, as well as the vision nerves and what happens with the images sent in by your eyes is all under control of your brain, so it is not unreasonable to have visual problems. Could have been something that was there before, but you could overcome it and never noticed, or it could be something newer. When I'm tired, I have all kinds of trouble that much of the time I can compensate for. (When I go in for exams, the doc usually ends up having to tell me, will you quit controlling it already! (nicely, we know each other well) because I am so used to fighting the problem that it's hard to let it go so he can see how "off" things really are. And there are many easy ways to help a vision coordination problem like that, so don't be too distressed, just go get checked out.

Thank you everyone for the information! I will try to find a suitable ophthalmologist in my area.