A working model of the compound eye can be constructed by the parallel arrangement of numerous tubes (e.g. straws) packed in a container. Lenses are not a necessary part of the model.
The defining power of the model depends upon the number of tubes per unit area--the greater their number, the more detailed is the image formed by the model.
The manner in which the model works would indicate that the image formed by the compound eye is a mosaic, or patchwork; and that lenses take no primary part in image formation by a compound eye, but are merely accessory structures which bring about an increase in the amount of light that strikes the retina.
- Copyright © 1926 The Company of Biologists Ltd.