Does contracting the ciliary muscles cause a decrease in the radius of curvature for the lens?

[sillyjoe]

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Since the contracting of the ciliary muscles makes the eye more rounded and decreases the focal point I was wondering if by extension you could say it decreases the radius of curvature since f = r/2 ?

 

[orangetea]

I think I read about that.. That's called accommodation. (although I haven't gone through optics yet) but maybe this page can help.

http://en.wikipedia.org/wiki/Accommodation_(eye)

🙂