Accommodation stimulation and recording device
Embodiments described herein generally relate to devices and methods for stimulation or recording of accommodation of an eye. Accommodation of an eye naturally occurs through contraction of the ciliary muscle. Embodiments described herein can deliver electrostimulation to the ciliary muscle through a pair of electrodes which deliver power over an area of the sclera which is both positioned above and over an area which is substantially equivalent to the surface area of the ciliary muscle. In further embodiments, electrical impulses produced by the ciliary muscle can be received by one or more electrodes positioned proximate the ciliary muscle. Thus, by embodiments described herein, accommodation of the eye can be reproducibly achieved by external stimulation of the ciliary muscle or measured based on electrical impulses generated by or in conjunction with the ciliary muscle.
1. An electrostimulation device, comprising:
a device body with a circular shape and an outer circumference, the device body comprising a posterior surface and an anterior surface surrounding an aperture formed in the device body between the anterior surface and the posterior surface, the posterior surface being shaped to fit an eye, wherein the body is shaped as two conical frustums which reflect at a convergent plane;
an inner ring electrode comprising an electrically-conductive material and formed on the posterior surface;
an outer ring electrode comprising an electrically-conductive material and formed on the posterior surface; and
an electrical stimulation source in electrical connection with the inner ring electrode and the outer ring electrode.
2. The electrostimulation device of claim 1 , wherein the electrically conductive material comprises a biocompatible conductive material.
3. The electrostimulation device of claim 1 , wherein the device body is composed of a non-conductive material.
4. The electrostimulation device of claim 1 , wherein the electrical stimulation source comprises a battery formed on or in the device body.
5. The electrostimulation device of claim 1 , further comprising a wireless connection for communication between the electrostimulation device and a computing device.
6. The electrostimulation device of claim 1 , further comprising an intraocular lens.