PURPOSE: This rule establishes the horizontal peripheral vision requirements necessary to receive a Missouri drivers license.

1. (1) In addition to the visual acuity standards required by Missouri statutes and rules, as stated in 12 CSR 10-24.090, the director shall require any person applying for a drivers license to submit to a screening of his/her horizontal peripheral field of vision by an objective quantitative visual field instrument.
2. (2) If an applicant has a fifty-five degree (55°) or better temporal horizontal peripheral vision in each eye, s/he shall receive a license with no additional restrictions.

3. (3) If an applicant has less than fifty-five degree (55°) temporal horizontal peripheral vision in one (1) eye and at least eighty-five degree (85°) temporal horizontal peripheral vision in the other eye, s/he shall receive a license with the following restriction:

   1. (A) If the applicant’s right eye has less than fifty-five degree (55°) temporal horizontal peripheral vision, a right outside rearview mirror shall be required; and
   2. (B) If the applicant’s left eye has less than fifty-five degree (55°) temporal horizontal peripheral vision, a left outside rearview mirror shall be required.

4. (4) If an applicant has less than fifty-five degree (55°) temporal horizontal peripheral vision in one (1) eye and less than eighty-five degree (85°) temporal horizontal peripheral vision in the other eye, s/he shall be referred to an eye doctor or physician of his/her choice for screening of his/her horizontal peripheral vision by an objective quantitative visual field instrument and shall receive a conditional license with the following restrictions:

   1. (A) Daylight driving only; and

   2. (B) Restricted to forty-five miles per hour (45 mph).

      1. 1. At the discretion of the department,

either of the two (2) restrictions listed in subsections (4)(A) and (B) may be removed or waived from the drivers license if an eye doctor or physician recommends removal.

1. 2. A specific driving radius may be

required if a registered optometrist or physician recommends this restriction.

1. (5) Any applicant with a combined horizontal peripheral vision reading of less than seventy degree (70°) shall be denied a Missouri drivers license.
2. (6) Horizontal peripheral field of vision readings completed by an eye doctor or physician are valid for one (1) year from date of eye examination.

AUTHORITY: section 302.175, RSMo 1994.* Original rule filed Oct. 1, 1987, effective March 11, 1988. Amended: Filed Dec. 11, 1991, effective April 9, 1992. Amended: Filed Dec. 15, 1998, effective June 30, 1999. *Original authority 1965, amended 1987, 1989.