Mo. Rev. Stat. § 209.080
It shall be the duty of the family support division to make such regulations relative to the examination of applicants for pension, including the examination by an ophthalmologist, a physician skilled in disease of the eye, or an optometrist, designated or approved by the family support division to make such examination and of all matters deemed necessary connected with the administration of this chapter. The examining ophthalmologist, a physician skilled in disease of the eye, or optometrist, shall certify in writing, upon forms provided by the family support division, the findings of the examination. The examination shall be provided for by the family support division without charge to the applicant and shall be paid as an administrative expense. No person shall be entitled to the benefits of this chapter who shall refuse to submit to treatment or operation to effect a cure when recommended by competent medical authority and approved by the family support division, but upon submission to such treatment or operation the pension of applicant otherwise entitled thereto, shall be paid as in other cases: Provided further, that no applicant who is more than seventy-five years of age shall be required to submit to an operation to restore his or her vision in order to come under the provisions of this chapter, but may voluntarily submit to operation.
§ 209.080, RSMo