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Diane: Visual complexity is also an area that continues to be an issue into phase 3 for students, and may continue long after most other CVI characteristics have resolved.  While children have less difficulty with complexity on individual targets, they may still need reduced complexity in an array or on a page of materials.  In addition, they may be easily distracted by environmental sounds such as rain on the roof, a squeaky door or a dog barking.  Accidental bumping or touching will also reduce visual attending behavior.

When mobile, as in walking in a line with other classmates from one location to another, students may have difficulty attending to where they are going when there is movement all around, noise from other talking classmates and changes in pavement or terrain.  In a classroom setting, keep in mind that a child with cortical visual impairment, when they're looking at materials, it's something like looking at a Highlights hidden picture.  You know, it's very complex and it helps to have some hints.  So often times, if we just take a black piece of construction paper, and cut out a window, and it will outline what it is that they're supposed to be looking at.  The other thing that can be done, as I mentioned earlier, is use a highlighter to highlight or color in the certain area of interest, or use a red permanent Sharpie marker to outline an area of interest as well.  So rather than having a very complex picture, the student is focusing in on exactly what here she needs to focus in on.  A wide variety of mats can be cut.  Sizes can be cut out of black construction paper, heavy construction paper that helps the child just focus in on what he needs to be attending to.  These are paint chip cards from home depot or Lowe's, and you can cut out... this is another paint chip card in black.  They have nice flat colors.

You can cut out the size window that you need to paint upon the materials that the student is looking at.  This paint chip card happens to have a hole already punched out of it, and sometimes they're the right size.  You can also cut pieces of yellow acetate film.  The yellow ones work well, and sometimes that's all a student needs to help draw their visual attention.  A bright line marker is also helpful to use.