Learning Forum

[ethanwg]

I am attempting to calculate the resistance across an eye from an applied voltage or current to two points on top of the cornea and the results that I am recieving are eratic and inconsistent indicating that I may be running my simulations incorrectly. My simulated eye is several cyinders with their respective materials, with a pupil in the iris which changes from 1mm radius to a 4mm radius. As the pupil increases in size there will be more conductive fluid and less muscle tissue (non-conductive) in the current path which should lower the resistance of the eye.

When I apply a constant current of 100mA (which is high but its just for checking resistance). The rsuslts are as follows:

Would anyone have any idea how to change this simulation so that the results are less speratic of is there a better way to do this other than Maxwell 3D DC Conduction?

[MirandaH]

Hi, can you highlight the area that excitations were assigned to? For the voltage plot, the results seem have lots of noise, is the mesh fine enough?

[ethanwg]

Those are the excitations, I'll atempt to increase the mesh polygons and will see.