Human eye, working model

Function and Applications

This model is a mechanical copy of an eyeball.

Benefits

• The back part of which is formed as a projection surface and is removable
• various eyeball lengths can be attained by inserting spacer rings
• correction of sight defects is achieved with lenses placed in front of the model
• it allows a vivid demonstration ofs hort-sightedness and long-sightedness compared to the normal vision of the human eye and of how such defects can be corrected
• the image on the "retina" (projection surface) is not turned rightside up, as it is by brain activity and is so seen upside down. 

Equipment and technical data

• Eyeball
• 2 spacer rings
• 2 lens
• diameter: 110mm

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