Tag Archive | strabismus


Today’s vision therapy appointment showed that the previous theory that my eyes are not really near-sighted was probably not accurate. Dr. Davies dilated my eyes with some really strong drops to take a closer look at my eyes. The other advantage of dilation is that it paralyzes the muscles so that theoretically my eyes should be straighter. Well, I am not observing them to be straighter, but it is somewhat easier to do certain exercises. As for the shape of my eyeballs, apparently my eyes adjusted to being overcorrected when I was young, and now they appear to be that elongated (near-sighted) shape.

As for the exercises that are easier, one is the aperture-rule. I got one of my very own today so I can work on it at home. I was able to fuse several more images than previously. I am hopeful that my eyes remember what to do when they are no longer dilated. We’ll see when the drops wear off.Image I found an interesting video on the aperture-rule on youtube (Aperture Rule.wmv). It explains the process pretty thoroughly. There are several related videos posted by vision therapy students as they demonstrate and learn the process.

I observed my son (who had convergence insufficiency) do the aperture-rule in a therapy session one day several months ago and it took him quite a while at first (a couple of minutes at a time) to achieve fusion, but he kept at it until he did. A couple of minutes sounds short until you stare at the images for 120 seconds. During most of Andrew’s therapy I was doing my own session, so it was good for me to watch him at work. It let me know that it’s ok to be patient, keep looking, relaxing and training my eyes to work like they should.

The goal for me is to become competent in doing the convergence (one aperture) fusion and then move on to the two aperture divergence training.