All non-temporary employees enrolled in Delta Dental of Iowa are automatically enrolled in the DeltaVision® discount program. This program comes at no extra cost to the employee. Any employee, and their covered dependents, are eligible to use this discount program. DeltaVision® offers discounts on materials such as exams, frames and lenses. DeltaVision® can not be used with Avesis vision insurance, you may only use one or the other per purchase. Visit our vision page for more information on this discount program.