Abstract

As an active dynamic system, the eye continuously gains and releases kinetic energy to the ocular walls. The lens, however, is not rigidly attached to the walls (the zonular ligaments join the lens capsule to the ciliary muscle) and therefore, inertial oscillations of the lens are expected after every eye movement (saccades). By studying these oscillations, we obtain information on the functionality of the ciliary muscle and the mechanisms driving presbyopia. In particular, we demonstrate how the ciliary muscle is still able to contract during presbyopia and even keep functionality at more advanced ages (~80 years old). These results might stimulate the search for future intraocular devices making use of that remaining muscular force in the ageing eye.

© 2017 Optical Society of America