EXHIBIT C VISION SERVICE PLAN OF ILLINOIS, NFP ADDITIONAL BENEFIT RIDER SUPPLEMENTAL ESSENTIAL MEDICAL EYE CARE GENERAL This Rider lists additional vision care benefits to which Covered Persons of VISION SERVICE PLAN INSURANCE COMPANY (“VSP”) are entitled, subject to any applicable Copayments and other conditions, limitations and/or exclusions stated herein. The Supplemental Essential Medical Eye Care benefit is designed for the detection, treatment and management of ocular conditions and/or systemic conditions which produce ocular or visual symptoms. Under the benefit, eye care professionals provide treatment and services for urgent ocular emergencies as well as the management of chronic systemic diseases that manifest in the eyes. This Rider forms a part of the Policy and Evidence of Coverage to which it is attached. ELIGIBILITY The following are Covered Persons under this Plan, pursuant to eligibility criteria established by Client: • Enrollee • Legal Spouse of Enrollee • Domestic Partner • Any child of Enrollee, including a natural child from date of birth, child of a civil union legally adopted child from the date of placement for adoption with the Enrollee, or other child for whom a court or administrative agency holds the Enrollee responsible. Dependent children are covered up to the end of the month in which they turn age 26. A dependent unmarried child over the limiting age may continue to be eligible as a dependent if the child is incapable of self-sustaining employment because of mental or physical disability, and chiefly dependent upon Enrollee for support and maintenance. Essential Medical Eye Care benefits are available to Covered Persons only after covered benefits under their group medical plan have been exhausted, or when Covered Person is not covered under a group medical plan. Covered benefits include specific medical eye care procedure codes when appropriate for the optometric scope of licensure as well as the current laws, rules and regulations as determined by the State and Federal Government. 18