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Lynne: The next characteristic we'd like to talk about is visual field preferences. And the visual fields really depend on area the brain that was damaged. You're not gonna be able to tell from the MRIs we said earlier.

But most people with CVI have some kind of visual field preference. According to the research I did, that's typically...central field is not typically a preferred field. So, I know that's different from a lot of other eye conditions. And just something to keep in mind. Just putting something right in front of a student with CVI may not be the best placement for what you want them to look at.

Sara: Although our first example, actually, is a student with more central field.

Lynne: Uh-hmm, right. So, we'll contradict each other.

Sara: When I was at the training recently with an eye doctor who does a lot of low vision work with kids. He said that anytime you see a motor problem on one side, you look for a field loss on the same side. So, it's all...the motor problem if it's, you know, on certain side, it's kind of like another kind of red flag to really examine that side for a field loss. Just something I learned recently.

Lynne: So, the little video clip we have is a student with a pretty obvious, um, visual field issue. It's kind of a textbook case. Cassie discovers her favorite toy all of a sudden, and it's really neat little video.

Sara: Yeah, you'll know exactly when she sees it.

[Video Dialog]



Sit down?


It just appeared. They were there all of a sudden.

Okay. Ready...




[end Video Dialog]

Sara: Mixed field preferences, we believe, happen when the brain is...the two sides of the brain are not communicating with each other. And the student may, um, use one side, one eye, one field for locating, and then another field for focusing. So, it might look like their head just completely turns and shifts.