A slide having green and cyan segments superposed on a red background, is projected onto a screen. Chromatic aberration in the eye diffuses the boundary between any of the two pairs of colors, causing a blurry white or gray line at the boundary.
These colors were chosen because they are complements as seen by various eyes. One or both of the pairs of colors will mix to form white when viewed by virtually anyone's eyes. The colors are not quite correct in the photograph above.
Demonstrate the optics of the eye and corrections of optical defects. Read More
Show inversion of the image on the retina by the eyelens. Read More
Model image inversion on the retina. Read More
Individual demonstration of image inversion on retina. Read More
See your retina! Read More
Identify nearsighted and farsighted eyes using laser speckle. Read More
Observe chromatic aberration in your eye. Read More
Show spherical aberration in eye and its correction. Read More
Demonstrate on-axis astigmatism. Read More
Demonstrate Mach bands. Read More
Demonstrate the dark axle illusion. Read More
Individual observation of floaters in the eye. Read More