Accommodation of the lens does not occur in emmetropia.
The development of an eye towards emmetropia is known as " emmetropization ".
Emmetropia is a state in which the eye is relaxed and focused on an object more than away.
The lens usually stiffens with age, causing less ability to focus when the eyes are not in a state of emmetropia.
Chynn, EW, Wesson, J, Azkasi, Z . Improving postoperative emmetropia results by modifying the manufacturer s A-constant.
In emmetropia, the lens is about 3.6 mm thick at the center; in accommodation, it thickens to about 4.5 mm.
Another treatment option for the correction of presbyopia in patients with emmetropia, as well as in patients with myopia, hyperopia and astigmatism is laser blended vision.
Second place went to 13-year old Rachel Wachtel of Wooster, Ohio, who missed " yarborough . " Both missed " emmetropia " and " chorography " in prior rounds before " yarborough " was used.
The SRK formula is calculated easily by hand as P = A-0.9 K-2.5 L, where P is the IOL power to be used for emmetropia, A is the IOL specific A constant, K is the average corneal refractive power ( diopters ), and L is the length of the eye ( mm ).