Help with science proj!? Light and optics related?

Question

I think I might want to have three glass balls to represent eyes. One spherical, one oblong, one short and squished. I'd shine two lasers through the spherical glass ball, demonstrating how the lasers converge perfectly at the back of the eye. Then i'd shine two lasers at the exact same angle and distance from the oblong "eye" to show how the lasers converge in the middle of the eye, representing far-sightedness.

I'd do the same with the squished "eye", showing how the laser light converges to far behind the glass ball, representing near-sightedness.

I have concave and convex lenses that you could place in front of the glass balls to see which one corrects which vision. Then there would be an explanation and what-not. It sounds pretty good to me, but I wonder,

Will the glass balls actually refract the laser light? I'm positive they will but my dad is doubtful

Answer 1

I am not an expert on optics but I think you are correct, it will refract light, since it has a refractive index of around 1.5.  All refraction is light travelling between to different material of different refractive indices, meaning light is traveling at different speeds in the different mediums.