The Fovea Cones are most densely packed within a region of the eye called the fovea. There are three types of cones, referred to as S, M, and L. They are roughly equivalent to blue, green, and red sensors, respectively. Their peak sensitivities are located at approximately 430nm, 560nm, and 610nm for the "average" observer.
	Lecture 2		Slide 24		6.837 Fall '01