VisVirtual

Interactive Puppet

PUPPET • PREVIEW Press Play to start the interactive puppet.

Description

The Vision & Light Path Simulator is an interactive educational model showing how light travels from an object into the eye. It follows the path of light through the cornea, pupil, and lens, shows how an inverted image forms on the retina, and then follows the visual signal through the optic nerve toward the brain. The simulator also explains that vision is not simply an image being mechanically flipped; retinal circuits and the brain process the incoming visual information.

Different simulation modes demonstrate normal vision, near and far viewing, myopia, hyperopia, astigmatism, bright-light response, and dim-light response. You can also manually change object distance, pupil size, lens focusing power, animation speed, and which parts of the visual pathway are displayed. The model uses simplified geometry so the optical pathway is easier to understand.

How To Use

Select a vision mode and watch how the incoming light rays, eye structures, retinal image, and visual signals change. Use the sliders to experiment with the eye's focusing system.

Control	Setting	Action
Normal Vision	Mode	Shows light focused on the retina.
Near Object	Mode	Shows increased lens accommodation for a nearby object.
Far Object	Mode	Shows the flatter lens used when viewing a distant object.
Myopia	Mode	Shows a simplified nearsighted eye where the focus falls before the retina.
Hyperopia	Mode	Shows a simplified farsighted eye where the focus tends to fall behind the retina.
Astigmatism	Mode	Shows unequal curvature producing more than one focal path.
Bright Light	Mode	Demonstrates pupil constriction in bright conditions.
Dim Light	Mode	Demonstrates pupil dilation in darker conditions.
Object Distance	Slider	Moves between near, medium, and far viewing conditions.
Pupil Size	Slider	Changes the pupil opening and the amount of light entering the eye.
Lens Focusing Power	Slider	Changes the lens focusing strength and alters where the rays converge.
Animation Speed	Slider	Changes the speed of the animated light and neural-signal pulses.
Show	Menu	Choose the full view, light rays only, anatomy labels, or neural signals.
Pause / Play	Button	Pauses or resumes the animation.
Reset	Button	Returns the simulator to its default settings.

01Select a simulation mode such as Normal Vision, Myopia, Astigmatism, Bright Light, or Dim Light.

02Adjust object distance, pupil size, and lens focusing power while watching how the light path changes.

03Compare the retinal image with conscious perception and follow the six-stage pathway from the object to visual processing in the brain.