Wiki Ophthamology Practice tests?

The American Academy of Ophthalmic Executive has an Ophthalmic Coding Specialist course with an exam and certification. If you contact them, they may be able to steer you towards what you need.
Good luck
becoming OCS certified

Thank you for your reply, it is very helpful.
Are you a OCS and if you are what materials did you study before your exam?
I was an Ophthalmic Tech for 2 years previous to becoming CPC cert. but I did not do any of the coding in the office.