Illinois Statutes Chapter 215. Insurance § 161/35. Modification of plan

(a) The terms, fees, discounts, or reimbursement rates in a vision care plan may not be changed during the term of the contract unless mutually agreed to in writing by the eye care provider and the vision care organization that issued the vision care plan. However, a change proposed to a vision care plan by the vision care organization shall become effective if the eye care provider fails to respond to the vision care organization within 60 days after receipt of notice of the proposed changes.

(b) The terms of a vision care plan contract that is amended, delivered, issued, or renewed after the effective date of this Act shall comply with the provisions of this Act.