Up to $50,000 Sign-on Bonus. As an Eye Specialist, you'll work with optometrists and ophthalmologists to conduct diagnostic vision tests and help care for and treat patients with eye or vision problems. Required certifications and/or experience: Current Certified Ophthalmic Assistant (COA) or higher is mandatory. Requirements. U.S. Citizen or a permanent resident with a valid green card. H.S. Diploma or a G.E.D. Able to pass a background check an...