Open AccessA Water Balloon Eye Model for Teaching about the Human Eye
Author(s) -
Kwok–chi Lau
Publication year - 2020
Publication title -
the american biology teacher
Language(s) - English
Resource type - Journals
eISSN - 1938-4211
pISSN - 0002-7685
DOI - 10.1525/abt.2020.82.5.341
Subject(s) - accommodation , balloon , lens (geology) , human eye , optometry , regular polygon , ophthalmology , computer science , optics , mathematics , medicine , physics , surgery , computer vision , geometry
A physical eye model made of a water balloon and a convex lens is described. It can be used to model how an image is formed in the eye as well as shortsightedness and farsightedness. The model is unique in featuring a fluid-filled “eyeball” with “intraocular pressure,” making it a useful tool for teaching about accommodation and glaucoma. Instructional ideas for the model are suggested.
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