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Color Fixation Sticks – A Great Vision Screening Tool for Ocular Motility Testing

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There are many things that affect our ability to see color. In some cases, it doesn’t matter if the red you see is the same shade another sees. A barn is barn, right? But for those who work in an industry where color evaluation is part of the job, it’s important. Let’s start with a bit of anatomy to help you understand how color fixation sticks can actually make a difference in testing ocular motility. Looking Inside an Eye The process of seeing color is quite amazing in human eye. When light enters through the eye’s cornea, the lens puts the object into focus and creates an inverted image at the back of the eye on the retina. Rods can’t distinguish colors. Their job is to detect changes in light and adapt the eye to help us see, even when it’s dark. Cones allow us see color. There are three kinds, each responsible for seeing red, green or blue, respectively. RGB – the three primary colors that combine to create the multitude of color beauty we see in our world. Rod and