2008
DOI: 10.1119/1.3023653
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A Model of the Human Eye

Abstract: We describe a model of the human eye that incorporates a variable converging lens. The model can be easily constructed by students with low-cost materials. It shows in a comprehensible way the functionality of the eye's optical system. Images of near and far objects can be focused. Also, the defects of near and farsighted eyes can be demonstrated.

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Cited by 13 publications
(11 citation statements)
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References 2 publications
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“…Unfortunately, it is quite expensive but one can make something very similar to this for a very low cost by using a Styrofoam sphere and transparent plastic. [1,2] The students do this hands-on part first. Then we introduce some of the physics concepts.…”
Section: An Example Lesson: Wavefront Abberometrymentioning
confidence: 99%
“…Unfortunately, it is quite expensive but one can make something very similar to this for a very low cost by using a Styrofoam sphere and transparent plastic. [1,2] The students do this hands-on part first. Then we introduce some of the physics concepts.…”
Section: An Example Lesson: Wavefront Abberometrymentioning
confidence: 99%
“…The globe eye model even has a sliding lens for accommodation, which, however, is different from the human eye, in which accommodation is a result of changes in the convexity of the lens. Colicchia et al (2008) made a lens with adjustable convexity by injecting water into a plastic disk.…”
Section: Introductionmentioning
confidence: 99%
“…Outro tipo de lente líquida de foco variável é aquela cuja curvatura da sua superfície pode ser alterada pela injeção ou retirada de líquido de dentro de uma câmara por meio de bombeamento [3], lentes que possuem esse mecanismo de bombeamento foram utilizadas para a construção de óculos de baixo custo em países em desenvolvimento [4]. No contexto do ensino experimental de Óptica, há a construção de uma lente líquida para servir de modelo do cristalino do olho humano, que consiste em uma placa de Petri e na Blucher Proceedings IX Encontro Científico de Física Aplicada extremidade aberta um filme elástico esticado [5]. A PASCO Optics possui em seu catálogo lente líquida, que consiste em uma seringa de 10 mL para o bombeamento, e tubo de plástico (câmera de armazenamento) com membranas flexíveis nas laterais [6] Na forma biconvexa, ainda é possível estudar as outras formas de imagens previstas para esse tipo de lente.…”
Section: Introductionunclassified