Ocular Torsion vision simulator

I made these images to show my doctors how I’ve seen things since my surgery (bilateral lateral rectus recession in May of 2005). I’m hoping these illustrations will help them to help me. The images below are not exact of what I see, but best I could do with my graphic software.

photo of faucets to simulate torsionShower faucet
When I cover my right eye, my left eye sees a distorted view. Amazingly, unless I am very tired, I am able to merge these two together into an image that is fuzzy, but fairly good.

photo of hairspray can to simulate torsionHairspray
When I relax my eyes and allow them to drift normally, the images split into a “V.” The left image (which normally crosses over to the right side) is a little higher, more transparent, and blurry.

graphic of picture frames to simulate torsionPicture frame
These views of a picture frame show what I see as I look at a picture on the wall with first one eye covered, then the other. I tried to place each image here as they overlapped on the wall.

It’s normal to see a slightly different view with the left and right eyes. This enables stereo or 3-d vision. But the images should be parallel and even in height. For an excellent explanation and illustrations of normal stereo vision, see vision3d.com.

Even when I manage to merge the images into one, I am always aware that my eyes are seeing two different images. My vision and balance feel lopsided. It is very hard to explain this sensation.

I’ve learned to adapt to all this. But I have not given up on the idea that some day maybe I’ll have more surgery to try to correct the problems in my left eye.

[Update October 18, 2006: See how this helped my Strabismus Surgeon know how to help me in my post Graphics help Ophthalmologist recognize torsion]

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3 thoughts on “Ocular Torsion vision simulator”

  1. The diagonal misalignment is know as torsion, and is caused by too much tension on either on the inferior oblique muscle, or superior oblique muscle of one eye. A single oblique muscle problem will cause vision of the deviating eye to turn outwards, be either elevated, or depressed, and twist the eye causing the diagonal misalignment known as torsion. Believe it or not, you’re not fusing your central vision of the both eyes, but suppressing vision of your right eye, because you’re most likely left brain dominant for language you’re not intellectually effected. To prove my point divide your eyes vertically with a folder and look at some text, and you will see the text in your left eye with no torsion, but your brain will see the text in your right eye with torsion, and either a depression, or elevation of vision, now do you really think you’re fusing your vision. To further prove I’m correct, try and use a pair of binoculars, and if you see two view ports you’re not fusing your vision even at a distance. A Halloween mask works quite nicely too, and you will get double vision. This because either method undoes normal fusion which allows you to produce stereoscopic vision, but you should still be capable of binocular fusion. The double vision occurs because the fovea of each eye now gets an image of whatever you’re viewing in central vision which normally should fuse, but since you’re suppressing vision of one eye you do not normally experience double vision. Since most ophthalmologists are inept to this problem and do not have the equipment to test, I recommend you see a developmental optometrist who will mostly likely diagnose a convergence problem and prescribe vision therapy, decline this because if your eyes are misaligned vision therapy will not help, but they can put you through a battery of tests for suppression of vision, and determine the which eye muscle is still causing the problem, and refer you to a very good muscle surgeon, because prisms added to your prescription will not correct the torsion either.

    Good luck,

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