School of Physics Lecture Demonstration Manual

Oa-2 Model of the Eye (Active)

Published: Wednesday 15 March 2006 - Updated: Friday 25 March 2011


To illustrate the defects that may occur in the eye and corrective measures that are applicable.



Click on pictures to enlarge.

Active Eye Model Diagram

Model of Eye (Active)


A parallel beam of light from a slide projector is directed onto a large flask containing fluorescene. The fluorescene is used to make the beam visible to a large audience. Initially a lens of 20cm focal length is attached to the flask with plasticene to show normal sight. Additional are available to show long and short sighted conditions and their correction

Safety notes

Electrical safety 

Sharps safety 


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