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The sheep have a dark, horizontal rectangle in the middle of their eyes and this is their pupil. Here we will examine why sheep have rectangular pupils and how this impacts their vision. Sheep ...
In humans, the pupil is circular, but its shape varies between species; some cats, reptiles, and foxes have vertical slit pupils, goats and sheep have horizontally oriented pupils, and some catfish have annular types. [3] In optical terms, the anatomical pupil is the eye's aperture and the iris is the aperture stop.
If the objects are not grouped, both eyes will end up on top of one another. Simply undo (Ctrl + Z), group and try again. Adding elliptical arcs and splines. Drawing an elliptic arc with the circle tool. Now we require a mouth for our smiley face. We can achieve this using the circle tool again, draw a circle about half the radius of the face's ...
Diagram of a human eye (horizontal section of the right eye) 1. Lens, 2. Zonule of Zinn or Ciliary zonule, 3. Posterior chamber and 4. Anterior chamber with 5. Aqueous humour flow; 6. Pupil, 7. Corneosclera or Fibrous tunic with 8. Cornea, 9. Trabecular meshwork and Schlemm's canal. 10. Corneal limbus and 11. Sclera; 12. Conjunctiva, 13. Uvea ...
Wikipedia:Featured picture candidates/Eye-diagram no circles border.svg; Wikipedia:Featured picture candidates/March-2007; Wikipedia:Featured pictures/Sciences/Biology; Wikipedia:Featured pictures thumbs/06; Wikipedia:Picture of the day/July 2007; Wikipedia:Templates for deletion/Log/2007 August 29; Wikipedia:Wikipedia Signpost/2007-03-20 ...
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