Video Demo: Laser Lens Eye

Teaching how the eyeball works usually involves showing diagrams of the eyeball and showing how light passes through the lens. Science teachers can also use Jello to make lenses that will show laser light refraction.  I tried that and had disastrous results.  I started to play around with mixing baby powder (mostly cornstarch) with red food coloring and water.  I was quite pleased with the results.  Go ahead and watch the video below to see what happens.