Can't see 2 thumbs or 2 pencils (or 2 objects) or does one thumb/pencil or object disappear and the reappear?
In addition do you or your child have difficulties with any of the following:
- throwing or catching a ball
- driving and parking a car
- planning and building a three-dimensional object
- threading a needle and sewing
- pouring into a container
You may want to consider having a comprehensive eye examination which includes the testing of binocular vision. Loss of binocular vision decreases quality of life.